MicroVAX 3100 Model 85/90/95/96 BA42B Enclosure Maintenance

MicroVAX 3100 Model 85/90/95/96 BA42B Enclosure Maintenance
MicroVAX 3100 Model 85/90/95/96
BA42B Enclosure Maintenance
Order Number: EK–M3100–MG. B01
June 1995
This manual provides reference, installation, and maintenance information
for the BA42B Enclosure used with the MicroVAX 3100 Model 85/90/95/96
systems.
Digital Equipment Corporation
Maynard, Massachusetts
First Printing, February 1995
Revised, June 1995
Digital Equipment Corporation makes no representations that the use of its products in the
manner described in this publication will not infringe on existing or future patent rights, nor do
the descriptions contained in this publication imply the granting of licenses to make, use, or sell
equipment or software in accordance with the description.
© Digital Equipment Corporation 1995. All Rights Reserved.
The postpaid Reader’s Comments forms at the end of this document request your critical
evaluation to assist in preparing future documentation.
The following are trademarks of Digital Equipment Corporation: DEC, Digital, MicroVAX,
OpenVMS, Q–bus, ThinWire, TK, VAX, VAX DOCUMENT, VT, and the DIGITAL logo.
All other trademarks and registered trademarks are the property of their respective holders.
S2871
This document was prepared using VAX DOCUMENT Version 2.1.
Contents
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ix
1 Enclosure Description
1.1
1.2
1.3
1.4
1.5
1.5.1
1.5.2
1.5.3
Mass Storage Device Areas . . . . . . . . . . . .
Controls, Indicators, Ports, and Connectors
Power and Signal Distribution . . . . . . . . . .
Air Circulation . . . . . . . . . . . . . . . . . . . . . .
Configuration Guidelines . . . . . . . . . . . . . .
Memory Configurations . . . . . . . . . . . .
Communications Options . . . . . . . . . . .
Mass Storage Devices . . . . . . . . . . . . . .
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1–2
1–2
1–6
1–8
1–9
1–9
1–12
1–14
Preparing the Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Enclosure Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . .
Additional Equipment . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Environment . . . . . . . . . . . . . . . . . . . . . . . . .
Electrostatic Discharge . . . . . . . . . . . . . . . . . . . . . . . . .
Heat Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Temperature, Humidity, and Altitude Ranges . . . . . . . .
Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . . .
Unpacking the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the MicoVAX 3100 Model 85/90/95/96 BA42B
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing a BA42B-Based MicroVAX 3100 Model
85/90/95/96 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identifying the Ports and Connectors on the System
Connecting the Console Terminal . . . . . . . . . . . . . . .
Connecting the ThinWire Terminator or Loopback
Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting the System Unit Power Cord . . . . . . . . .
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2–1
2–1
2–2
2–3
2–3
2–3
2–4
2–4
2–5
....
2–6
....
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2–7
2–7
2–7
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2–10
2–13
2 Installation Procedures
2.1
2.1.1
2.1.2
2.1.3
2.1.4
2.1.5
2.1.6
2.1.7
2.2
2.3
2.3.1
2.3.1.1
2.3.1.2
2.3.1.3
2.3.1.4
iii
2.3.1.5
Turning On the System . . . . . . . . . . . . . . . . . . . . . . . . . .
2–14
3 Removing and Replacing Field Replaceable Units
3.1
3.2
3.3
3.4
3.4.1
3.4.2
3.4.3
3.5
3.5.1
3.5.2
3.6
3.6.1
3.6.2
3.7
3.7.1
3.7.2
3.8
3.8.1
3.8.2
3.8.3
3.8.4
3.8.5
3.9
3.9.1
3.9.2
iv
Removing the Enclosure Cover . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing an MS44 or MS44L Memory Module . . . . . . . . . . . . . .
Removing the Upper Drive-Mounting Shelf . . . . . . . . . . . . . . . . .
Removing the RX26/RX23 Diskette Drive Assembly . . . . . . . . . .
Removing the RX26 or RX23 FDI/SCSI Board . . . . . . . . . . . .
Separating the RX26/RX23 Diskette Drive from the
Mounting Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the SCSI ID on the Replacement RX26/RX23
FDI/SCSI Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing a TZ30 Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Separating the TZ30 Tape Drive from the Mounting
Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the SCSI ID on the Replacement TZ30 Tape
Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing a TZK10/TZK11 Tape Drive . . . . . . . . . . . . . . . . . . . . .
Separating the TZK10/TZK11 Tape Drive from the Mounting
Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the SCSI ID of the Replacement TZK10/TZK11 Tape
Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing a TLZ06/TLZ07 Tape Drive . . . . . . . . . . . . . . . . . . . . .
Separating the TLZ06/TLZ07 Tape Drive from the Mounting
Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the SCSI ID and Option Switches of the Replacement
TLZ06/TLZ07 Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing an RZ-Series Disk Drive . . . . . . . . . . . . . . . . . . . . . . .
Removing an RZ-Series Disk Drive from the Upper
Drive-Mounting Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing an RZ-Series Disk Drive from the Lower
Drive-Mounting Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Separating the Support Plate from an RZ23L or RZ24 Disk
Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Separating the Mounting Bracket from an RZ24L, RZ25,
RZ25L, RZ26, RZ26L, or RZ28 Disk Drive . . . . . . . . . . . . . . .
Setting the SCSI ID on the Replacement Disk Drive . . . . . . .
Removing an RRD42 CDROM Drive . . . . . . . . . . . . . . . . . . . . . .
Separating the RRD42 CDROM Drive from the Mounting
Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the SCSI ID on the Replacement RRD42 CDROM
Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–5
3–6
3–9
3–13
3–14
3–15
3–16
3–19
3–21
3–22
3–23
3–25
3–26
3–28
3–30
3–31
3–32
3–32
3–34
3–36
3–38
3–40
3–47
3–49
3–51
3.10
Removing an RRD43 CDROM Drive . . . . . . . . . . . . . . . . . . . .
3.10.1
Separating the RRD43 CDROM Drive from the Mounting
Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.10.2
Setting the SCSI ID on the Replacement RRD43 CDROM
Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.11
Removing the Upper and Lower Drive-Mounting Shelf
Combination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.12
Removing the Internal SCSI Cable from the BA42B
Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.13
Removing the KZDDA SCSI Daughter Board and Cable . . . . .
3.14
Removing the DSW42 Synchronous Communications Option .
3.14.1
Removing the DSW42 Logic Board . . . . . . . . . . . . . . . . . .
3.14.2
Removing the DSW42 Input/Output Cable . . . . . . . . . . . .
3.14.3
Removing the DSW42 Input/Output Module . . . . . . . . . . .
3.15
Removing the DHW42 Asynchronous Communications
Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.15.1
Removing the DHW42 Logic Board . . . . . . . . . . . . . . . . . .
3.15.2
Removing the DHW42 Input/Output Cable . . . . . . . . . . . .
3.15.3
Removing the DHW42 Input/Output Module . . . . . . . . . . .
3.16
Removing the CPU Module . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.17
Replacing the CPU Module . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.18
Removing the Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . .
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3–53
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3–55
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3–57
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3–58
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3–62
3–63
3–67
3–67
3–68
3–69
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3–71
3–71
3–72
3–73
3–75
3–79
3–80
A Pin Specifications for the Ports on the BA42B System
B Related Documentation
C Recommended Spare Parts List
Glossary
Index
v
Figures
1–1
1–2
1–3
1–4
1–5
1–6
1–7
1–8
2–1
2–2
2–3
2–4
2–5
2–6
2–7
3–1
3–2
3–3
3–4
3–5
3–6
3–7
3–8
3–9
3–10
3–11
3–12
3–13
vi
BA42B Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MicroVAX 3100 BA42B-Based Systems Controls, Indicators,
Ports, and Connectors for all Models . . . . . . . . . . . . . . . . . . .
Power Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Signal Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Memory Expansion Connectors on the KA50/51/55/56 CPU
Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identifying Appropriate Banks of SIMM Connectors . . . . . . .
Communications Options in Model 85/90/95/96 Systems . . . .
Mass Storage Device Combinations in the BA42B
Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BA42B Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Unit and Accessory Tray Contents . . . . . . . . . . . . . . .
Connecting the Console Terminal . . . . . . . . . . . . . . . . . . . . . .
Connecting the ThinWire Terminator to the System . . . . . . .
Connecting the Standard Ethernet Loopback Connector to
the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting the Power Cord . . . . . . . . . . . . . . . . . . . . . . . . . .
Turning On the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Major FRUs in the BA42B Enclosure . . . . . . . . . . . . . . . . . . .
Removing the Enclosure Cover . . . . . . . . . . . . . . . . . . . . . . .
Memory Module Connectors on the KA50/51/55/56 CPU
Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing a Memory Module . . . . . . . . . . . . . . . . . . . . . . . . .
Disconnecting the Internal Power Cables . . . . . . . . . . . . . . . .
Disconnecting the SCSI Cables from the Drives . . . . . . . . . .
Removing the Upper Drive-Mounting Shelf . . . . . . . . . . . . . .
Removing the RX26/RX23 Diskette Drive Assembly . . . . . . .
Removing the RX26/RX23 FDI/SCSI Board . . . . . . . . . . . . . .
Separating the Mounting Bracket from the RX26/RX23
Diskette Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Location of the SCSI ID Switches on the RX26/RX23
FDI/SCSI Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How to Reach the SCSI ID Switches on the RX26/RX23
FDI/SCSI Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing a TZ30 Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . .
1–1
1–3
1–7
1–8
1–10
1–11
1–13
1–15
2–2
2–6
2–9
2–11
2–12
2–14
2–15
3–4
3–5
3–7
3–8
3–10
3–11
3–12
3–14
3–15
3–16
3–17
3–18
3–20
3–14
3–15
3–16
3–17
3–18
3–19
3–20
3–21
3–22
3–23
3–24
3–25
3–26
3–27
3–28
3–29
3–30
3–31
3–32
3–33
3–34
3–35
3–36
3–37
3–38
3–39
Separating the Mounting Bracket from the TZ30 Tape
Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TZ30 SCSI ID Switch Locations . . . . . . . . . . . . . . . . . . . . . . .
Removing the TZK10/TZK11 Tape Drive . . . . . . . . . . . . . . . .
Separating the Mounting Bracket from the TZK10/TZK11
Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Locations of the SCSI ID Jumper Wires on the TZK10/TZK11
Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the TLZ06/TLZ07 Tape Drive . . . . . . . . . . . . . . . .
Separating the Mounting Bracket from the TLZ06/TLZ07
Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Locations of the SCSI ID and Option Switches on the
TLZ06/TLZ07 Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing RZ-Series Disk Drives from the Upper
Drive-Mounting Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing an RZ-Series Disk Drive from the Lower
Drive-Mounting Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Separating the Support Plate from the Disk Drive . . . . . . . .
Separating the Mounting Bracket from the RZ26 Disk
Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RZ23L Disk Drive SCSI ID Jumper Wire Locations . . . . . . . .
RZ24 Disk Drive SCSI ID Jumper Wire Locations . . . . . . . . .
RZ24L Disk Drive SCSI ID Jumper Wire Locations . . . . . . . .
RZ25 Disk Drive SCSI ID Jumper Wire Locations . . . . . . . . .
RZ25L Disk Drive SCSI ID Jumper Wire Locations . . . . . . . .
RZ25M Disk Drive SCSI ID Jumper Wire Locations . . . . . . .
RZ26/RZ26L/RZ28 Disk Drive SCSI ID Jumper Wire
Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the RRD42 CDROM Drive . . . . . . . . . . . . . . . . . . .
Separating the Mounting Bracket from the RRD42 CDROM
Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RRD42 SCSI ID Jumper Wire Locations . . . . . . . . . . . . . . . .
Removing the RRD43 CDROM Drive . . . . . . . . . . . . . . . . . . .
Separating the Mounting Bracket from the RRD43 CDROM
Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Upper and Lower Drive-Mounting Shelf
Combination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disconnecting the SCSI Cable . . . . . . . . . . . . . . . . . . . . . . . .
3–21
3–22
3–24
3–25
3–27
3–29
3–30
3–31
3–33
3–35
3–37
3–39
3–41
3–41
3–42
3–43
3–44
3–45
3–46
3–48
3–50
3–52
3–54
3–56
3–59
3–60
vii
3–40
3–41
3–42
3–43
3–44
3–45
3–46
3–47
3–48
3–49
3–50
3–51
3–52
A–1
Separating the Upper Drive-Mounting Shelf from the Lower
Drive-Mounting Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disconnecting the KZDDA SCSI Cable . . . . . . . . . . . . . . . . .
Removing the KZDDA SCSI Daughter Board . . . . . . . . . . . .
Removing the KZDDA SCSI Cable from the Enclosure . . . . .
Removing the DSW42 Logic Board . . . . . . . . . . . . . . . . . . . .
Removing the DSW42 Input/Output Cable . . . . . . . . . . . . . .
Removing the DSW42 Input/Output Module . . . . . . . . . . . . .
Removing the DHW42 Logic Board . . . . . . . . . . . . . . . . . . . .
Removing the DHW42 Input/Output Cable . . . . . . . . . . . . . .
Removing the DHW42 Input/Output Module . . . . . . . . . . . . .
Disconnecting the Cables from the CPU Module . . . . . . . . . .
Removing the CPU Module . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Power Supply . . . . . . . . . . . . . . . . . . . . . . . . .
Pin Specifications for the Ports on the BA42B System . . . . . .
3–61
3–64
3–65
3–66
3–68
3–69
3–70
3–72
3–73
3–74
3–76
3–78
3–81
A–2
Tables
1–1
1–2
1–3
1–4
1–5
2–1
2–2
2–3
3–1
A–1
A–2
A–3
A–4
C–1
viii
Functions of the Controls, Indicators, Ports, and
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply dc Outputs . . . . . . . . . . . . . . . . . . . . . . .
BA42B Communications Options . . . . . . . . . . . . . . . . .
DSW42-AA Communications Interface Support . . . . . .
BA42B Mass Storage Devices . . . . . . . . . . . . . . . . . . . .
Temperature, Humidity, and Altitude Ranges . . . . . . .
BA42B Electrical Requirements . . . . . . . . . . . . . . . . . .
Terminal Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Major FRUs in the BA42B Enclosure . . . . . . . . . . . . . .
Asynchronous Port A and Port B Pin Specifications for
Eight-Data and 16-Data Line Options . . . . . . . . . . . . .
Asynchronous Port A and Port B Pin Specifications for
Eight-Modem Control Line Option . . . . . . . . . . . . . . . .
Pin Specifications for Synchronous Port 0 and Port 1 .
Pin Specifications for the External SCSI Connector . . .
Recommended Spare Parts . . . . . . . . . . . . . . . . . . . . . .
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the
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the
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1–4
1–6
1–12
1–12
1–14
2–4
2–5
2–7
3–3
.
A–3
.
.
.
.
A–4
A–6
A–9
C–1
Preface
This manual provides the information that you will need to maintain the
BA42B Enclosure when used with the MicroVAX 3100 Model 85/90/95/96
systems. It contains information about the enclosure, installation information,
and procedures for servicing field replaceable units (FRUs).
Audience
This manual is for Digital™ Services personnel who provide support and
maintenance for systems that use this enclosure. It is also for customers
who have a self-maintenance agreement with Digital Equipment Corporation.
Users of this manual must have experience in replacing hardware components.
Structure of This Manual
This manual is divided into three chapters, three appendixes, a glossary, and
an index:
•
Chapter 1 provides an overview of the system enclosure and describes
the controls, mass storage areas and capacity, signal distribution, power
distribution, input and output connections, and configuration guidelines.
•
Chapter 2 provides site preparation information and describes how to
install the systems that use the enclosure.
•
Chapter 3 provides instructions on removing and replacing FRUs.
ix
x
•
Appendix A gives the pin specifications for the ports on the back of the
system unit.
•
Appendix B gives a list of the related documents.
•
Appendix C gives a list of recommended spare parts.
Conventions
The following conventions are used in this manual:
Convention
Description
Ctrl/x
Ctrl/x indicates that you hold down the Ctrl key while you press
another key or mouse button (indicated here by x).
x
A lowercase italic x indicates the generic use of a letter. For
example, xxx indicates any combination of three alphabetic
characters.
italic type
Italic type emphasizes important information, indicates variables,
and indicates the complete titles of manuals.
nn nnn.nnn nn
A space character separates groups of 3 digits in numerals with 5 or
more digits. For example, 10 000 equals ten thousand.
n.nn
A period in numerals signals the decimal point indicator. For
example, 1.75 equals one and three-fourths.
Note
A note contains information of special importance to the reader.
Caution
A caution contains information to prevent damage to the equipment.
xi
1
Enclosure Description
This chapter describes the BA42B Enclosure. It gives information on the
following:
•
Mass storage device areas
•
Controls, indicators, ports, and connectors
•
Power and signal distribution
•
Air circulation
•
Configuration guidelines
The BA42B Enclosure houses the system unit of the MicroVAX 3100 Model
85/90/95/96 systems. It is a desktop-style enclosure (see Figure 1–1).
Figure 1–1 BA42B Enclosure
RE_EN06213A_91
Enclosure Description 1–1
Enclosure Description
1.1 Mass Storage Device Areas
1.1 Mass Storage Device Areas
The BA42B Enclosure contains 3.5-inch (13.5 cm) and 5.25-inch (20.25cm)
half-height mass storage devices. These mass storage devices are mounted on
two drive-mounting shelves. The upper drive-mounting shelf can contain one,
two, or three SCSI drives. The lower drive-mounting shelf can contain one
or two SCSI devices, including CDROM drives and removable media devices.
See Section 1.5.3 for information about mass storage device combinations and
orientation.
1.2 Controls, Indicators, Ports, and Connectors
The power OK indicator (POK) is on the front of the BA42B Enclosure.
Figure 1–2 show the common ports and connectors in MicroVAX 3100 BA42Bbased system. Table 1–1 describes the functions of the controls, indicators,
ports, and connectors in all MicroVAX 3100 BA42B-based systems.
1–2 Enclosure Description
Enclosure Description
1.2 Controls, Indicators, Ports, and Connectors
Figure 1–2 MicroVAX 3100 BA42B-Based Systems Controls, Indicators,
Ports, and Connectors for all Models
On/Off Switch
ac Power Socket
SCSI Port
Synchronous
Communications
Ports (0,1)
Asynchronous
Communications
Ports (A,B)
B
1
A
0
0
MMJ Ports (0,1,3)
Asynchronous Modem
Control Port (2)
Halt Push Button
Break/Enable Switch
Break/Enable LED
LED Display
Standard Ethernet Port
Ethernet Switch
ThinWire Ethernet Port
Power OK Indicator (POK)
RE_EN06214A_91
Enclosure Description 1–3
Enclosure Description
1.2 Controls, Indicators, Ports, and Connectors
Table 1–1 Functions of the Controls, Indicators, Ports, and Connectors
Component
Description
On/Off switch
Applies and stops the power to the system unit as follows:
System ac power socket
1
•
On ( | )—Applies the ac power to the system unit
•
Off (O)—Stops the ac power to the system unit
A socket for the ac power input.
SCSI port
A port that allows you to connect external SCSI devices.
Synchronous communications ports (0,1)2
Two ports that allow you to connect devices that have
synchronous communications support.
Asynchronous communications ports (A,B)2
One or two ports that provide one of the following
asynchronous communications expansion options:
MMJ port 0
3
•
Eight DEC423 compatible asynchronous ports
•
Sixteen DEC423 compatible asynchronous ports
•
Eight EIA-232 compatible modem ports
DEC423 compatible asynchronous port.
MMJ port 3
DEC423 compatible asynchronous port. This port is the
console port.
MMJ port 1
DEC423 compatible asynchronous port.
Asynchronous modem
control port (2)
EIA-232 compatible asynchronous port with modem control.
Halt push button
A momentary-contact push button that puts the system in
console mode.
Break/enable switch5
A two-position switch that determines the function of MMJ
port 3 as follows:
1 Small
•
Up position—The break function is enabled.
•
Down position—The break function is disabled.
computer system interface (SCSI).
2 Optional
ports that depend on the system configuration.
3 Modified
modular jack (MMJ).
5 The
system recognizes the position of this switch only when you turn on the power.
(continued on next page)
1–4 Enclosure Description
Enclosure Description
1.2 Controls, Indicators, Ports, and Connectors
Table 1–1 (Cont.) Functions of the Controls, Indicators, Ports, and Connectors
Component
Break/enable LED
Description
6
A LED indicator that shows the function of MMJ port 3 as
follows:
•
On—MMJ port 3 functions as a console port.
•
Off—MMJ port 3 functions as a normal communications
port.
LED display
A set of eight LEDs that provide power-up and selftest diagnostic code information. This is useful for fault
diagnosis when the console terminal is not functioning.
Standard Ethernet port
A port that allows you to connect the system to a standard
Ethernet network.
Ethernet switch
A two-position switch that determines the type of Ethernet
that the system uses as follows:
ThinWire Ethernet port
6 Light
•
Left position—selects the standard Ethernet type
•
Right position—selects the ThinWire™ Ethernet type
A port that allows you to connect the system to a ThinWire
Ethernet network.
emitting diode (LED).
Enclosure Description 1–5
Enclosure Description
1.3 Power and Signal Distribution
1.3 Power and Signal Distribution
The power supply (30-35042-01) provides power to all the units in the
enclosure. It accepts alternating current (ac) input voltage in the ranges 110 V
ac to 120 V ac (88 V rms1 to 132 V rms) and 220 V ac to 240 V ac (176 V rms
to 264 V rms).
The regulators in the power supply maintain the correct direct current (dc)
output voltages, which are independent of the fluctuations in the ac input
power. The power supply can provide a continuous power output of 166
watts (W). The power supply has two internal fans that cool the unit while it
operates. Table 1–2 gives the current specifications of the dc circuits.
Table 1–2 Power Supply dc Outputs
Voltage (dc)
Output Current Range in Amperes (dc)
Minimum
Maximum
+5.1
3.8
15.0
+12.1
0.18
7.1
-12.0
0.3
1.0
-9.0
0.0
0.2
+3.3
0.0
3.5
The power supply (30-35042-01) has the following output connectors:
•
A flying lead connector that provides the dc power to the central processing
unit (CPU) module
•
One connector on the side of the power supply that provides the dc power
to the devices on the upper drive-mounting shelf
•
One connector on the side of the power supply that provides the dc power
to the devices on the lower drive-mounting shelf
Figure 1–3 shows the distribution of power in the BA42B Enclosure.
1
Root mean square.
1–6 Enclosure Description
Enclosure Description
1.3 Power and Signal Distribution
Figure 1–3 Power Distribution
CPU Module
Lower Shelf
dc Harness
Cable
(17-03018-01)
Power
Supply
TZ30 or
TZK10/11 or
TLZ06/07 or
RRD42/43 or
RX26 or
RZ*
TZK10/11 or
TLZ06/07 or
RRD42/43 or
RX26 or
RZ*
Additional
Connector
for RX26
Lower Drive
Mounting Shelf
Upper Shelf
dc Harness
Cable
(17-03615-01)
Not Used
RZ*
RZ*
RZ*
Upper Drive
Mounting Shelf
Note: RZ* denotes RZ-Series Disk Drives
MLO-012379a
Appendix A provides information on the pin specifications for the connectors.
The CPU module is the main source for signal distribution in a BA42B
Enclosure system. The SCSI cables are connected to the CPU module. Each
of the other connectors on the cables has a pull-tab. Use the pull-tab to
disconnect the cable from a device. Each pull-tab has a number that identifies
the drive to which the SCSI cable connector is connected (see Figure 1–4).
Enclosure Description 1–7
Enclosure Description
1.3 Power and Signal Distribution
Figure 1–4 Signal Distribution
External SCSI
(17-02944-01)
External Q-bus
(not used on 3100-Series)
Synchronous Input/Output
(17-02942-01)
CPU Module
Asynchronous
Input/Output
(17-09242-01
Internal SCSI
Internal DSSI
(not used on 3100-Series)
Power
Supply
SCSI Cable
(17-02943-01)
TZK10/11 or
TLZ06/07 or
RRD42/43 or
RX26 or
RZ*
TZ30 or
TZK10/11 or
TLZ06/07 or
RRD42/43 or
RX26 or
RZ*
Lower Drive
Mounting Shelf
RZ*
RZ*
RZ*
Upper Drive
Mounting Shelf
Note: RZ* denotes RZ-Series Disk Drives
MLO-013145
1.4 Air Circulation
The power supply (30-35042-01) contains two fans. These fans provide the air
circulation for the enclosure. The air intake is on the right side of the BA42B
Enclosure (when viewed from the front), and the air exhaust is on the left side.
A typical value of airflow is 0.0104 cubic meters per second (m³/sec) (22 cubic
feet per minute [ft³/min]).
1–8 Enclosure Description
Enclosure Description
1.5 Configuration Guidelines
1.5 Configuration Guidelines
The combination of memory, communications options, and internal mass
storage devices determines the configuration of a system. Refer to
the MicroVAX 3100 Model 85/90/95/96 KA50/51/55/56 CPU System
Maintenance manual for a list of the external mass storage devices that
MicroVAX 3100 Models 85/90/95/96 systems support.
1.5.1 Memory Configurations
In the MicroVAX 3100 85/90/95/96, the basic system memory is 16-MB or 64MB. This memory is contained on two sets of MS44L-BC or MS44-DC modules
installed on the KA50/51/55/56 CPU module. You can expand the system
memory in 16-MB or 32-MB increments by adding MS44L-BC or MS44-DC
memory options. An MS44L-BC memory option consists of four MS44L-AA
(4-MB) memory modules. An MS44-DC memory option consists of four MS44CA (16-MB) memory modules. Figure 1–5 shows the locations of the memory
expansion connectors on the MicroVAX 3100 Models 85/90/95/96 KA50/51/55/56
CPU module.
Enclosure Description 1–9
Enclosure Description
1.5 Configuration Guidelines
Figure 1–5 Memory Expansion Connectors on the KA50/51/55/56 CPU
Module
1G
0C
1E
0A
1H
0D
1F
0B
MLO-009828
Note
Both MS44–DC (four MS44–CA SIMMs) and MS44L–BC (four MS44L–
AA SIMMs) must be installed entirely in either the ‘‘1’’ bank or the ‘‘0’’
bank of connectors; do not mix them in banks.
Figure 1–6 shows the banks of slots as they are viewed from the front of the
system. The ‘‘1’’ set of banks is shaded for identification.
1–10 Enclosure Description
Enclosure Description
1.5 Configuration Guidelines
Figure 1–6 Identifying Appropriate Banks of SIMM Connectors
2
1
1H
1G
6
5
0C
0D
4
3
1E
1F
8
7
0B
0A
! Bank 1G
" Bank 1H
# Bank 1E
$ Bank 1F
% Bank 0C
& Bank 0D
' Bank 0A
( Bank 0B
MLO-012342
Enclosure Description 1–11
Enclosure Description
1.5 Configuration Guidelines
1.5.2 Communications Options
Table 1–3 lists the communications options that a BA42B Enclosure can
contain.
Table 1–3 BA42B Communications Options
Option Name
Description
Asynchronous Options
DHW42-AA
Provides 8 DEC423 asynchronous lines
DHW42-BA
Provides 16 DEC423 asynchronous lines
DHW42-CA
Provides 8 EIA-232 asynchronous modem lines
DHW42-UP
8 to 16 DEC423 asynchronous line upgrade
Synchronous Options
DSW42-AA1
1 This
Provides two EIA-232/V.24 synchronous lines
option is supplied with two external cables that support the EIA-232/V.24 interface.
The DSW42-AA option also supports the communications interfaces listed in
Table 1–4, but you must order the external cable separately.
Table 1–4 DSW42-AA Communications Interface Support
Communications Interface
External Cable
EIA-423/V.10
BC19E-02
EIA-422/V.11
BC19B-02
Each communications option contains three field replaceable units (FRUs) that
are installed in the enclosure as follows:
•
A logic board
The logic board connects directly to the CPU module.
•
An input/output cable
The input/output cable connects the CPU module to the input/output
module.
•
An input/output module
1–12 Enclosure Description
Enclosure Description
1.5 Configuration Guidelines
The input/output module is a snap-fit assembly that is attached to the
inside of the back panel of the BA42B Enclosure.
The communications options logic boards have different locations in the BA42B
Enclosure, depending on the model number of the system. The DHW42 logic
board is located to the left of the CPU module, with the DSW42 logic board
located to its right (see Figure 1–7.
Figure 1–7 Communications Options in Model 85/90/95/96 Systems
DSW42 Input/Output Module
DSW42 Input/Output Cable
DSW42 Logic Board
DHW42 Logic Board
DHW42 Input/Output Module
DHW42 Input/Output Cable
MLO-009870
Enclosure Description 1–13
Enclosure Description
1.5 Configuration Guidelines
1.5.3 Mass Storage Devices
Table 1–5 lists the mass storage devices that the BA42B Enclosure can
contain.
Table 1–5 BA42B Mass Storage Devices
Option Name
Description
Size1
Capacity
(in)
RZ23L
Disk drive
3.5
120-MB
RZ24
Disk drive
3.5
209-MB
RZ24L
Disk drive
3.5
245-MB
RZ25
Disk drive
3.5
400-MB
RZ25L
Disk drive
3.5
535-MB
RZ25M
Disk drive
3.5
545-MB
RZ26
Disk drive
3.5
1.05-GB
RZ26L
Disk drive
3.5
1.05-GB
RZ28
Disk drive
3.5
2.10-GB
2
TZ30
Tape drive
5.25
95-MB cartridge
2
TZK10/TZK11
Tape drive
5.25
Range of cartridges
TLZ06/TLZ072
Tape drive
5.25
Range of cassettes
RX26/RX23
2
Diskette drive
3.5
Range of diskettes
RRD42
2
CDROM drive
5.25
600-MB CDROM
RRD43
2
CDROM drive
5.25
600-MB CDROM
1 Size
of half-height device.
2 Removable
media device.
The BA42B Enclosure has two drive-mounting shelves for mass storage devices
as follows:
•
Upper drive-mounting shelf
The upper drive-mounting shelf can contain one, two, or three SCSI drives.
•
Lower drive-mounting shelf
The lower drive-mounting shelf can contain one or two SCSI devices. These
devices are either CDROM drives or removable media devices.
1–14 Enclosure Description
Enclosure Description
1.5 Configuration Guidelines
Figure 1–8 shows the combinations of mass storage devices in a BA42B
Enclosure.
Figure 1–8 Mass Storage Device Combinations in the BA42B Enclosure
Upper Drive-mounting Shelf
RZ*
RZ*
RZ*
Lower Drive-mounting Shelf
TLZ06/07
TZK10/11
RRD42/43
RX26
RZ*
Left-hand Compartment
TLZ06/07
TZ30
TZK10/11
RRD42/43
RX26
RZ*
Right-hand Compartment
Note: RZ* denotes RZ-Series disk drives.
MLO-009829a
Enclosure Description 1–15
2
Installation Procedures
This chapter describes how to install a MicroVAX 3100 Model 85/90/95/96
BA42B system. It gives information on the following:
•
Preparing the site
•
Unpacking the system
•
Installing a BA42B system
2.1 Preparing the Site
Before you unpack the system, verify the physical, environmental, and
electrical requirements described in this section.
2.1.1 Enclosure Dimensions
Figure 2–1 shows the dimensions of the BA42B Enclosure.
Caution
The container and enclosure together typically weigh 20.50 kilograms
(kg) (45 pounds [lb]). Two people are required to handle the container.
Installation Procedures 2–1
Installation Procedures
2.1 Preparing the Site
Figure 2–1 BA42B Dimensions
14.99 cm
(5.90 in)
40.00 cm
(15.75 in)
46.83 cm
(18.26 in)
RE_EN06221A_91
The dimensions of the container are as follows:
•
Height = 35.3 cm (14.0 inches)
•
Width = 61.1 cm (24.0 inches)
•
Depth = 51.0 cm (20.0 inches)
2.1.2 Additional Equipment
When you are installing additional equipment, follow these guidelines:
•
Make sure that there is sufficient space for the terminals and other
peripheral equipment.
•
Make sure that you keep the mass storage devices in an area that has the
same temperature and humidity as the computer area (see Table 2–1).
•
When you plan the cable routing for multiple-terminal systems, consider
factors such as safety, convenience, future expansion, and cost. Label and
install the cables before you install the system.
2–2 Installation Procedures
Installation Procedures
2.1 Preparing the Site
2.1.3 Operating Environment
Computer systems in office areas are subject to electrostatic discharge (ESD),
temperature changes, and humidity. To install the system in the correct
environment, follow these guidelines:
•
Install the system in a well-ventilated area where the temperature and
humidity ranges listed in Table 2–1 are maintained during the year.
•
Do not place a system near heating or cooling devices, large windows, or
doors that open to the outside. Rapid changes of temperature can affect
the performance of the system.
•
Place the system in an area where the air contains a minimum of dust and
other abrasive contaminants.
2.1.4 Electrostatic Discharge
ESD can cause system failures and loss of data. To minimize the buildup of
static electricity, follow these guidelines:
•
Maintain a relative humidity level of at least 40%.
•
Place the system away from busy corridors.
•
Carpet in the computer area is not recommended. However, if you want to
use carpet, antistatic carpet is recommended. When carpet is already in
use, put an antistatic mat under the system.
2.1.5 Heat Dissipation
The heat dissipated by a BA42B Enclosure system depends on the model
number of the system, but is typically 410 British thermal units/hour (Btu/h).
Installation Procedures 2–3
Installation Procedures
2.1 Preparing the Site
2.1.6 Temperature, Humidity, and Altitude Ranges
Table 2–1 gives the operating, nonoperating, and storage ranges for the
temperature, humidity, and altitude for BA42B Enclosure systems.
Table 2–1 Temperature, Humidity, and Altitude Ranges
Parameter
Operating Range1
Nonoperating Range
Storage Range
Temperature
10°C to 40°C
–40°C to 66°C
5°C to 50°C
(50°F to 104°F)
(–40°F to 151°F)
(41°F to 122°F)
Relative
humidity2
10% to 90%
10% to 95%2
10% to 95%
Altitude
2400 m maximum
4900 m maximum
(8000 ft maximum)
(16 000 ft maximum)
Rate of change
of temperature
11°C per hour
maximum
(20°F per hour
maximum)
1 For
operation above sea level, decrease the operating temperature by 1.8°C per 1000 m (or 1°F
per 1000 ft).
2 At
a temperature of 66°C.
2.1.7 Electrical Requirements
The power source to which the system connects must be capable of providing
power to the system unit and any other additional equipment, such as local
terminals and expansion boxes. Digital™ recommends that each system
operates in a dedicated power circuit. Additional power equipment may
be required to avoid power interruptions. Table 2–2 lists the electrical
requirements of systems in BA42B Enclosures. The power supply in the
system is autosensing. You do not have to select the input voltage.
2–4 Installation Procedures
Installation Procedures
2.1 Preparing the Site
Table 2–2 BA42B Electrical Requirements
Parameter
Values
Nominal voltages
110 V ac or 220 V ac
Voltage ranges
100 V ac to 120 V ac (88 V rms1 to 132 V rms) and
220 V ac to 240 V ac (176 V rms to 264 V rms)
Power source phase
Single
Nominal frequencies
50 Hz2 or 60 Hz
Frequency range
47 Hz to 63 Hz
Maximum running current
1.2 A for 110 V ac systems and 0.6 A for 220 V ac
systems
Steady state current
1.0 A for 110 V ac systems and 0.5 A for 220 V ac
systems
Maximum inrush current
32 A
Maximum power consumption
120 W
1 Root
mean square (rms).
2 Hertz
(Hz).
2.2 Unpacking the System
Open the container. Remove the box and the accessory tray. The box contains
the system unit. The accessory tray contains the following:
•
Customer Hardware Information Kit
•
OpenVMS Factory Installed Software User Guide
•
Software licenses
•
Power cord
•
Other accessories
Expansion boxes, if ordered, are supplied in separate containers.
Depending on the system configuration, the contents of the container may
differ from the items shown in Figure 2–2. When unpacking the system, do the
following:
1. Check the contents of the container against the packing slip.
2. Store the unused parts for future use. Depending on how you set up the
system, you may not use all the components supplied with the system.
Installation Procedures 2–5
Installation Procedures
2.2 Unpacking the System
Always repack the system unit in its original packing material when moving or
relocating the system. This precaution protects the system from damage.
Figure 2–2 System Unit and Accessory Tray Contents
DEC423 Terminal Cable
System Unit
ThinWire T-Connector
and Two Terminators
Power Cord
Standard Ethernet
Loopback Connector
RS232 to
DEC423 Adapter
Documentation and
Software Licences
RE_EN06222A_91
2.3 Installing the MicoVAX 3100 Model 85/90/95/96 BA42B
System
After you unpack the system, move the BA42B Enclosure to the location from
which it will operate. Place the enclosure so that it satisfies the following
space requirements:
•
Allow 5 cm (approximately 2 inches) of clearance on each side of the
enclosure for ventilation.
•
Allow 10 cm (approximately 4 inches) of clearance in the back of the
enclosure for the connection of cables.
2–6 Installation Procedures
Installation Procedures
2.3 Installing the MicoVAX 3100 Model 85/90/95/96 BA42B System
•
Allow 20 cm (approximately 8 inches) of clearance in the front of the
enclosure so that you can reach the removable media devices, depending on
the system configuration.
2.3.1 Installing a BA42B-Based MicroVAX 3100 Model 85/90/95/96
To install a MicroVAX 3100 Model 85/90/95/96:
2.3.1.1 Identifying the Ports and Connectors on the System
Figure 1–2 shows the ports and connectors on a MicroVAX 3100 Model 85/90/95/96.
Section 1.2 describes the functions of the controls, indicators, ports, and
connectors in all BA42B-based systems.
2.3.1.2 Connecting the Console Terminal
To connect a console terminal to a BA42B-based MicroVAX 3100 Model 85/90/95/96
system, follow these steps:
1. Make sure that the on/off switch on the terminal is in the off position.
2. Set the communication parameters of the terminal (see Table 2–3).
Table 2–3 Terminal Settings
Feature
Setting
Terminal mode
VTnnn-7bit
Transmit speed
9600 baud
Receive speed
receive = transmit
Character format
8 bits, no parity
Stop bits
1
Comm1 port
DEC-423 (data-leads-only)
See the terminal documentation if you want more information on setting
up the terminal.
Note
If you connect the console terminal cable to one of the MMJ ports on
the back of a VT3xx terminal, you must set the port so that it can
operate as a DEC423 port. See the terminal documentation for more
information.
Installation Procedures 2–7
Installation Procedures
2.3 Installing the MicoVAX 3100 Model 85/90/95/96 BA42B System
3. Connect the terminal cable supplied with the system (see Figure 2–2) to
MMJ port 3 on the back of the system (see Figure 2–3). Connect the other
end of the console cable to a DEC423 port on the terminal.
4. If the terminal has EIA-232 ports only, connect the EIA-232 to DEC423
adapter to the EIA-232 port on the terminal. Then connect the terminal
cable to the EIA-232 to DEC423 adapter.
Note
Some terminal cables have ground wire. You must connect this ground
wire to the grounding pillar (screw) above MMJ port 1, using the screw
provided with the cable.
2–8 Installation Procedures
Installation Procedures
2.3 Installing the MicoVAX 3100 Model 85/90/95/96 BA42B System
Figure 2–3 Connecting the Console Terminal
GA_EN00146A_92A
Installation Procedures 2–9
Installation Procedures
2.3 Installing the MicoVAX 3100 Model 85/90/95/96 BA42B System
2.3.1.3 Connecting the ThinWire Terminator or Loopback Connector
You can connect BA42B-based MicroVAX 3100 Model 85/90/95/96 systems to
either a ThinWire Ethernet network or to a standard Ethernet network. To
test the Ethernet circuitry in the system before you connect to a network,
install either the ThinWire terminator or the standard Ethernet loopback
connector.
The ThinWire terminator and the standard Ethernet loopback connector are
supplied with BA42B systems (see Figure 2–2). The ThinWire terminator
consists of a T-Connector and two end terminators. The standard Ethernet
loopback connector is a single unit.
You choose the network type using the Ethernet switch on the back of the
system (see Figure 1–2). The switch settings for the network types are as
follows:
•
Right position—ThinWire Ethernet
•
Left position—standard Ethernet
When you want to use a ThinWire Ethernet network, follow these steps:
1. Set the Ethernet switch to the right position.
2. To form a ThinWire terminator, connect the two terminators (see
Figure 2–4) to the T-Connector.
3. Connect the ThinWire terminator to the ThinWire Ethernet port on the
back of the system unit by pushing in and turning the barrel connector
clockwise until it locks (see Figure 2–4).
2–10 Installation Procedures
Installation Procedures
2.3 Installing the MicoVAX 3100 Model 85/90/95/96 BA42B System
Figure 2–4 Connecting the ThinWire Terminator to the System
Terminators
T-Connector
B
1
A
0
0
GA_EN00147A_92A
Installation Procedures 2–11
Installation Procedures
2.3 Installing the MicoVAX 3100 Model 85/90/95/96 BA42B System
If you want to use a standard Ethernet network, follow these steps:
1. Set the Ethernet switch to the left position.
2. Connect the standard Ethernet loopback connector to the standard
Ethernet port on the back of the system unit (see Figure 2–5).
Figure 2–5 Connecting the Standard Ethernet Loopback Connector to the
System
Standard Ethernet Loopback Connector
B
1
A
0
0
GA_EN00148A_92A
2–12 Installation Procedures
Installation Procedures
2.3 Installing the MicoVAX 3100 Model 85/90/95/96 BA42B System
2.3.1.4 Connecting the System Unit Power Cord
A BA42B-based MicroVAX 3100 Model 85/90/95/96 accepts 100 V ac to 120 V
ac at 50 Hz or 60 Hz, or 220 V ac to 240 V ac at 50 Hz or 60 Hz. The power
supply is self-sensing. You do not have to select the input voltage. To connect
the system power cord, follow these steps:
1. Set the on/off switch on the back of the system to the off (O) position.
2. Connect the power cord, supplied with the system (see Figure 2–2), to the
ac power socket on the back of the system (see Figure 2–6).
3. Connect the other end of the power cord to a grounded power outlet.
Installation Procedures 2–13
Installation Procedures
2.3 Installing the MicoVAX 3100 Model 85/90/95/96 BA42B System
Figure 2–6 Connecting the Power Cord
Power Cord
B
1
A
0
0
GA_EN00149A_92A
2.3.1.5 Turning On the System
To turn on the system, follow these steps:
1. Set the on/off switch on the terminal to the on position.
2. Set the on/off switch on the system to the on ( | ) position (see Figure 2–7).
2–14 Installation Procedures
Installation Procedures
2.3 Installing the MicoVAX 3100 Model 85/90/95/96 BA42B System
Figure 2–7 Turning On the System
On/Off Switch
B
1
A
0
0
GA_EN00150A_92A
Refer to the MicroVAX 3100 Model 85/90/95/96 KA50/51/55/56 CPU System
Maintenance manual for information about the self-tests that run when you
turn on the system.
Installation Procedures 2–15
3
Removing and Replacing Field
Replaceable Units
Note
FRUs for the BA42B-based MicroVAX 3100 systems are the same for
Models 85, 90, 95, and 96 except where noted. Illustrations in this
chapter depict various models.
This chapter describes how to remove and replace the Field Replaceable Units
(FRUs) in the BA42B Enclosure. Use this chapter when:
•
Removing the enclosure cover
•
Removing the upper drive-mounting shelf
•
Removing an MS44 or MS44L memory module
•
Removing an RX23/RX26 diskette drive assembly
•
Removing a TZ30 tape drive
•
Removing a TZK10/TZK11 tape drive
•
Removing a TLZ06/TLZ07 tape drive
•
Removing an RZ-series disk drive
•
Removing an RRD42 CDROM drive
•
Removing an RRD43 CDROM drive
•
Removing the upper and lower drive-mounting shelf combination
•
Removing the internal SCSI cable
•
Removing a KZDDA Dual SCSI daughter board and cable
•
Removing a DSW42 synchronous communications option
•
Removing a DHW42 asynchronous communications option
Removing and Replacing Field Replaceable Units 3–1
Removing and Replacing Field Replaceable Units
•
Removing the CPU module
•
Replacing the CPU module
•
Removing the power supply
Note
Unless otherwise specified, you can replace a FRU by reversing the
steps described in the removal procedure.
Table 3–1 lists the major FRUs in the BA42B Enclosure. It also gives the
order numbers for the FRUs and a reference to a section in this chapter that
gives information on how to replace the FRU. Refer to the MicroVAX 3100
BA42B Enclosure System Options manual for more information about options.
Appendix C gives a complete list of the spare parts for the BA42B Enclosure.
Figure 3–1 shows the locations of the major FRUs in the BA42B Enclosure.
Caution
•
Only qualified personnel should remove or install the FRUs.
•
Before you remove or install the FRUs, turn off the system and
disconnect the power cord.
•
Static electricity can damage integrated circuits. Wear a wrist
strap and place an antistatic mat under the system when working
with the internal parts of the system unit.
You must have the following tools to replace the FRUs in a BA42B-based
MicroVAX system:
•
A number 1, Phillips screwdriver
•
A blade screwdriver
3–2 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
Table 3–1 Major FRUs in the BA42B Enclosure
FRU
Order Numbers
Section
Memory module
MS44-BC, MS44L-DC
3.2
Diskette drive
RX23-AA, RX26-AA
3.4
TZ30 tape drive
TZ30-AA
3.5
TZK10/TZK11 tape drive
TZK10-AA, TZK11-AA
3.6
TLZ06/TLZ07 tape drive
TLZ06-AA, TLZ07-AA
3.7
RZ23L
RZ23L-EH
3.8
RZ24
RZ24-EH
3.8
RZ24L
RZ24L-EH
3.8
RZ25
RZ25-EK
3.8
RZ25L
RZ25L-EK
3.8
RZ25M
RZ25M-EK
3.8
RZ26/RZ26L/RZ28
RZ26-EK/RZ26L-EK
/RZ28-EK
3.8
RRD42 CDROM drive
RRD42-AA
3.9
RRD43 CDROM drive
RRD43-AA
3.10
KZDDA SCSI Daughter Board
KZDDA-AF
3.10
Synchronous communications option
DSW42-AA
3.14
Asynchronous communications option
DHW42-AA, -BA, -CA
3.15
KA55
KA50
KA51
KA56
54–21797–04
54–21797–01
54–21797–02
54–21797–03
3.16
30-35042-01
3.18
CPU
CPU
CPU
CPU
module
module
module
module
Power supply
(Model
(Model
(Model
(Model
85) or
90) or
95) or
96)
Removing and Replacing Field Replaceable Units 3–3
Removing and Replacing Field Replaceable Units
Figure 3–1 Major FRUs in the BA42B Enclosure
RZ* Disk Drives
Upper Drive
Mounting Shelf
RZ* or
TLZ06/07 Tape Drive, or
TZK10/11 Tape Drive, or
RX26 Diskette Drive, or
RRD42/43 CDROM Drive
DSW42 Input/Output Module
DSW42 Input/Output Cable
DSW42 Logic Board
Power Supply Unit
DHW42 Logic Board
DHW42 Input/Output Module
DHW42 Input/Output Cable
CPU Module
Note: RZ * denotes RZ-Series Disk Drives
Lower Drive
Mounting Shelf
TZK10/11 Tape Drive
(Optionally,
TLZ06 Tape Drive, or
TZ30 Tape Drive, or
RX26 Diskette Drive, or
RRD42/43 CDROM Drive
or RZ*
MS44/MS44L Memory
Module
KZDDA SCSI Module
MLO-012378a
3–4 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.1 Removing the Enclosure Cover
3.1 Removing the Enclosure Cover
To remove the enclosure cover, follow these steps:
1. Set the on/off switch on the system to the off (O) position.
2. Disconnect the cables, loopback connectors, and terminators that are
connected to the system.
3. Loosen the two captive screws (12-30338-05) on the back of the system unit
(refer to Figure 3–2).
4. Slide the cover forward and lift it up from the system unit.
Figure 3–2 Removing the Enclosure Cover
Enclosure Cover
B
1
A
0
0
Captive Screws (2)
!
"
RE_EN06230A_91
Captive screws (2)
Enclosure cover
Removing and Replacing Field Replaceable Units 3–5
Removing and Replacing Field Replaceable Units
3.2 Removing an MS44 or MS44L Memory Module
3.2 Removing an MS44 or MS44L Memory Module
To remove a memory module:
1. Remove the ac power from the BA42B Enclosure.
2. Remove the enclosure cover (refer to Section 3.1).
Caution
Static electricity can damage integrated circuits. Wear a wrist strap
and place an antistatic mat under the system unit when working with
the internal parts of the system unit.
3. Locate the faulty memory module. Figure 3–3 shows the location of the
memory module connectors on the KA50/51/55/56 CPU module.
Note
•
Note the position of the faulty memory module on the CPU
module. You must install the replacement in the same position.
See Section 1.5.1 for memory configurations.
•
You may have to remove one or two memory modules to reach
the faulty memory module. Note carefully the position of each
memory module you remove.
3–6 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.2 Removing an MS44 or MS44L Memory Module
Figure 3–3 Memory Module Connectors on the KA50/51/55/56 CPU Module
MS44 or MS44L Memory Modules (4)
0A
0B
1F
0D
1E
0C
1G
1H
MLO-009839
4. Push the metal board clips on the memory module connector away from
the center. Tilt the memory module toward the back of the enclosure, and
lift the memory module out of its connector (refer to Figure 3–4).
Caution
When installing a memory module, note that the connectors on the
CPU module are keyed so that you cannot install the memory module
with an incorrect orientation. Do not try to force a module into a
connector.
Removing and Replacing Field Replaceable Units 3–7
Removing and Replacing Field Replaceable Units
3.2 Removing an MS44 or MS44L Memory Module
Figure 3–4 Removing a Memory Module
Metal Board Clip
MS44 Memory Modules
MLO-009876
3–8 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.3 Removing the Upper Drive-Mounting Shelf
3.3 Removing the Upper Drive-Mounting Shelf
To reach some of the FRUs in the BA42B Enclosure, you must remove the
upper drive-mounting shelf. Depending on the system configuration, the
upper drive-mounting shelf can contain one, two, or three disk drives. You
can remove the upper drive-mounting shelf with the disk drives attached. To
remove the upper drive-mounting shelf, follow these steps:
1. Remove the enclosure cover (see Section 3.1).
Note
When disconnecting the cables, you must note which cables connect to
which drives. On the SCSI cable, note the number on the connector
pull-tab.
2. Disconnect the power cables from the power supply unit. Figure 3–5 shows
where to disconnect the power cables in the BA42B Enclosure.
Removing and Replacing Field Replaceable Units 3–9
Removing and Replacing Field Replaceable Units
3.3 Removing the Upper Drive-Mounting Shelf
Figure 3–5 Disconnecting the Internal Power Cables
1
MLO-010803
!
Internal power cables
3. Disconnect the SCSI cable from the disk drives by pulling the pull-tabs.
Figure 3–6 shows a typical signal cable being disconnected the BA42B
Enclosure.
3–10 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.3 Removing the Upper Drive-Mounting Shelf
Figure 3–6 Disconnecting the SCSI Cables from the Drives
1
!
MLO-010804
Internal SCSI connector
4. Loosen the three captive screws (see Figure 3–7).
Removing and Replacing Field Replaceable Units 3–11
Removing and Replacing Field Replaceable Units
3.3 Removing the Upper Drive-Mounting Shelf
Figure 3–7 Removing the Upper Drive-Mounting Shelf
Captive
Screws (3)
Upper Drive
Mounting Shelf
RE_EN06232A_91
5. Lift the left side of the upper drive-mounting shelf, and pull the drivemounting shelf to the left until the tabs on the right side of the mounting
shelf are clear of the cutouts in the lower drive-mounting shelf.
6. Remove the upper drive-mounting shelf from the enclosure.
3–12 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.4 Removing the RX26/RX23 Diskette Drive Assembly
3.4 Removing the RX26/RX23 Diskette Drive Assembly
The RX26/RX23 diskette drive assembly (when installed) is positioned on the
left side or the right side of the lower drive-mounting shelf when viewed from
the front. The RX26/RX23 diskette drive assembly contains three FRUs as
follows:
•
RX26-AA/RX23-AA diskette drive
•
RX26/RX23 FDI/SCSI board (54-20764-02)
•
RX26/RX23 ribbon cable (17-00285-00)
The following procedure describes how to remove an RX26/RX23 diskette drive
assembly from the right side of the lower drive-mounting shelf. The procedure
for removing the RX26/RX23 diskette drive assembly from the left side of the
lower drive-mounting shelf is the same. To remove the RX26/RX23 diskette
drive assembly from the BA42B Enclosure, follow these steps:
1. Remove the enclosure cover (refer to Section 3.1).
2. Remove the upper drive-mounting shelf (refer to Section 3.3).
Note
When disconnecting the cables, you must note which cables connect to
which drives. On the SCSI cable, note the number on the connector
pull-tab.
3. Disconnect the power cable from the back of the RX26/RX23 diskette drive.
Figure 1–3 shows the power cables in the BA42B Enclosure.
4. Disconnect the power cable from the floppy diskette interface/small
computer system interface (FDI/SCSI) board.
5. Disconnect the SCSI cable from the back of the FDI/SCSI board by pulling
the pull-tab. Figure 1–4 shows the signal cables in the BA42B Enclosure.
6. Loosen the captive screw securing the mounting bracket to the lower
drive-mounting shelf (refer to Figure 3–8).
Removing and Replacing Field Replaceable Units 3–13
Removing and Replacing Field Replaceable Units
3.4 Removing the RX26/RX23 Diskette Drive Assembly
Figure 3–8 Removing the RX26/RX23 Diskette Drive Assembly
RX26 Diskette Drive
Captive Screw
RE_EN06234A_91
7. Lift the left side of the RX26/RX23 diskette drive assembly and pull the
diskette drive assembly to the left until the tabs on the right side of the
mounting bracket are clear of the cutouts in the lower drive-mounting
shelf.
8. Lift the RX26/RX23 diskette drive assembly out of the BA42B Enclosure.
3.4.1 Removing the RX26 or RX23 FDI/SCSI Board
To remove the FDI/SCSI board from the RX26/RX23 mounting bracket, follow
these steps:
1. Disconnect the ribbon cable that connects the RX26/RX23 diskette drive to
the RX26/RX23 FDI/SCSI board.
2. Turn the RX26/RX23 diskette drive assembly over so that the base of the
mounting bracket faces up.
3–14 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.4 Removing the RX26/RX23 Diskette Drive Assembly
3. Press firmly on the front edge of the FDI/SCSI board with your finger.
When the two holes on the front edge of the FDI/SCSI board are clear of
the tabs in the RX26/RX23 mounting bracket, slide the RX26/RX23 FDI
/SCSI board out of the RX26/RX23 mounting bracket (refer to Figure 3–9).
Figure 3–9 Removing the RX26/RX23 FDI/SCSI Board
Hole in RX26 FDI Board (2)
RE_EN06235A_91
3.4.2 Separating the RX26/RX23 Diskette Drive from the Mounting
Bracket
When you are installing a replacement RX26/RX23 diskette drive, you must
use the mounting bracket (70-29669-01) that is attached to the faulty RX26
/RX23 diskette drive (RX26-AA or RX23-AA). To separate the RX26/RX23
diskette drive from its mounting bracket, follow these steps:
1. Remove the four screws (90-10961-03) securing the RX26/RX23 mounting
bracket to the RX26/RX23 diskette drive.
2. Separate the mounting bracket from the RX26/RX23 diskette drive (refer to
Figure 3–10).
Removing and Replacing Field Replaceable Units 3–15
Removing and Replacing Field Replaceable Units
3.4 Removing the RX26/RX23 Diskette Drive Assembly
Figure 3–10 Separating the Mounting Bracket from the RX26/RX23 Diskette
Drive
Philips Screws (4)
RX26 Mounting Bracket
RX26 Diskette Drive
RE_EN06452A_91
3.4.3 Setting the SCSI ID on the Replacement RX26/RX23 FDI/SCSI
Board
When replacing the FDI/SCSI board, you must set the SCSI ID of the
replacement board to the SCSI ID of the board you remove. To set the SCSI ID
on a replacement RX26/RX23 FDI/SCSI board, follow these steps:
1. Note the SCSI ID switch settings on the RX26/RX23 FDI/SCSI board you
removed. Figure 3–11 shows the location of the SCSI ID switches on the
FDI/SCSI board.
2. Set the SCSI ID switches on the replacement RX26/RX23 FDI/SCSI board
to the same settings as the SCSI ID switches of the RX26/RX23 FDI/SCSI
board you removed.
3–16 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.4 Removing the RX26/RX23 Diskette Drive Assembly
Figure 3–11 Location of the SCSI ID Switches on the RX26/RX23 FDI/SCSI
Board
Note: The switch is off in the up position
S3
S2
S1
SCSI ID Switches
RE_EN06236A_91
Note
If the the FDI/SCSI board and mounting bracket are already installed
on the drive, you can reach the SCSI ID switches through a ventilation
slot in the mounting bracket (refer to Figure 3–12).
Removing and Replacing Field Replaceable Units 3–17
Removing and Replacing Field Replaceable Units
3.4 Removing the RX26/RX23 Diskette Drive Assembly
Figure 3–12 How to Reach the SCSI ID Switches on the RX26/RX23 FDI/SCSI
Board
S1
S2
S3
Note: The SCSI ID shown is 4 (S1 is on, S2 is off, and S3 is off).
RE_EN06471A_91
3–18 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.5 Removing a TZ30 Tape Drive
3.5 Removing a TZ30 Tape Drive
In the MicroVAX 3100 Models 85, 90, 95, 96, the TZ30 tape drive is always
mounted in the right-hand position of the lower drive-mounting shelf, when
viewed from the front. To remove a TZ30 tape drive from the BA42B Enclosure,
follow these steps:
1. Remove the enclosure cover (refer to Section 3.1).
2. Remove the upper drive-mounting shelf (refer to Section 3.3).
Note
•
You can disconnect the cables from the drive more easily after
you remove the drive from the drive-mounting shelf.
•
When disconnecting the cables, you must note which cables
connect to which drives. On the SCSI cable, note the number
on the connector pull-tab.
3. Loosen the captive screw that secures the mounting bracket to the
drive-mounting shelf (refer to Figure 3–13).
Removing and Replacing Field Replaceable Units 3–19
Removing and Replacing Field Replaceable Units
3.5 Removing a TZ30 Tape Drive
Figure 3–13 Removing a TZ30 Tape Drive
TZ30 Tape Drive
Captive Screw
RE_EN06237A_91
4. Lift the left side of the TZ30 tape drive. Slide the TZ30 tape drive to the
left until the tabs on the right side of the mounting bracket are clear of the
cutouts in the drive-mounting shelf.
5. Disconnect the power cable from the flying lead connector of the TZ30 tape
drive. Figure 1–3 shows the power cables in the BA42B Enclosure.
6. Disconnect the SCSI cable from the TZ30 tape drive by pulling the pull-tab.
Figure 1–4 shows the signal cables in the BA42B Enclosure.
7. Lift the TZ30 tape drive, which has its mounting bracket attached, out of
the system unit.
3–20 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.5 Removing a TZ30 Tape Drive
3.5.1 Separating the TZ30 Tape Drive from the Mounting Bracket
When you are installing a replacement TZ30 tape drive, you must use the
mounting bracket (74-42115-01) that is attached to the faulty TZ30 tape drive
(TZ30-AA). To separate the mounting bracket from the faulty TZ30 tape drive,
follow these steps:
1. Remove the two screws (90-09984-07) from the right side of the mounting
bracket with a Phillps screwdriver (refer to Figure 3–14).
2. Remove one screw (90-09984-07) from the left side of the mounting bracket
(refer to Figure 3–14).
3. Remove one screw (90-10961-03) from the bottom of the drive mounting
bracket (refer to Figure 3–14).
4. Separate the mounting bracket from the TZ30 tape drive.
Figure 3–14 Separating the Mounting Bracket from the TZ30 Tape Drive
Philips Screw
Philips Screws (3)
TZ30 Mounting Bracket
TZ30 Tape Drive
RE_EN06453A_91
5. Keep the mounting bracket and the four screws in a safe place because you
must use them to install the replacement TZ30 tape drive.
Removing and Replacing Field Replaceable Units 3–21
Removing and Replacing Field Replaceable Units
3.5 Removing a TZ30 Tape Drive
3.5.2 Setting the SCSI ID on the Replacement TZ30 Tape Drive
To set the SCSI ID on the replacement TZ30 tape drive, follow these steps:
1. Note the SCSI ID switch settings on the TZ30 tape drive you removed.
Figure 3–15 shows the location of the SCSI ID switches and the
recommended SCSI ID for tape drives.
2. Set the SCSI ID switches on the replacement TZ30 tape drive to the same
settings as the SCSI ID switches on the TZ30 tape drive you removed.
Figure 3–15 TZ30 SCSI ID Switch Locations
4
3
2
1
On
Off
Notes: 1. S1 is not used (always on).
2. The SCSI ID shown is 5 (S2 is on, S3 is off, and S4 is on).
RE_EN06238A_91
Refer to the MicroVAX 3100 BA42B Enclosure System Options manual for more
information about setting the SCSI ID of the TZ30 tape drive.
3–22 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.6 Removing a TZK10/TZK11 Tape Drive
3.6 Removing a TZK10/TZK11 Tape Drive
The TZK10/TZK11 tape drive (when installed) can be on the right side or the
left side of the lower drive-mounting shelf, when viewed from the front. The
following procedure describes how to remove a TZK10/TZK11 tape drive from
the right side of the lower drive-mounting shelf. The procedure for removing
the TZK10/TZK11 tape drive from the left side of the lower drive-mounting
shelf is the same. To remove a TZK10/TZK11 tape drive from the BA42B
Enclosure, follow these steps:
1. Remove the enclosure cover (refer to Section 3.1).
2. Remove the upper drive-mounting shelf (refer to Section 3.3).
Note
•
You can disconnect the cables from the drive more easily after
you remove the drive from the drive-mounting shelf.
•
When you disconnect the cables, note which cables connect
to which drives. On the SCSI cable, note the number on the
connector pull-tab.
3. Loosen the captive screw that secures the mounting bracket to the
drive-mounting shelf (refer to Figure 3–16).
Removing and Replacing Field Replaceable Units 3–23
Removing and Replacing Field Replaceable Units
3.6 Removing a TZK10/TZK11 Tape Drive
Figure 3–16 Removing the TZK10/TZK11 Tape Drive
TZK10 Tape Drive
Captive Screw
RE_EN06239A_91
4. Lift the left side of the TZK10/TZK11 tape drive. Slide the TZK10/TZK11
tape drive to the left until the tabs on the right side of the mounting
bracket are clear of the cutouts in the lower drive-mounting shelf.
5. Disconnect the power cable from the back of the TZK10/TZK11 tape drive.
Figure 1–3 shows the power cables in the BA42B Enclosure.
6. Disconnect the SCSI cable from the back of the TZK10/TZK11 tape drive
by pulling the pull-tab. Figure 1–4 shows the signal cables in the BA42B
Enclosure.
7. Lift the TZK10/TZK11 tape drive out of the system unit.
3–24 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.6 Removing a TZK10/TZK11 Tape Drive
3.6.1 Separating the TZK10/TZK11 Tape Drive from the Mounting
Bracket
When you install a replacement TZK10/TZK11 tape drive, you must use the
mounting bracket (74-42449-01) that is attached to the faulty TZK10/TZK11
tape drive (TZK10-AA, TZK11-AA). To separate the mounting bracket from the
faulty TZK10/TZK11 tape drive, follow these steps:
1. Note which holes are used for attaching the mounting bracket to the drive
before you remove it. You must use the same holes for the replacement.
2. Remove the four screws (90-10961-03) that secure the mounting bracket to
the TZK10/TZK11 tape drive (refer to Figure 3–17).
3. Separate the mounting bracket from the TZK10/TZK11 tape drive.
Figure 3–17 Separating the Mounting Bracket from the TZK10/TZK11 Tape
Drive
Phillips Screws (4)
TZK10 Mounting Bracket
TZK10 Tape Drive
MLO-009938
4. Keep the mounting bracket and the four screws in a safe place because you
must use them to install the replacement TZK10/TZK11 tape drive.
Removing and Replacing Field Replaceable Units 3–25
Removing and Replacing Field Replaceable Units
3.6 Removing a TZK10/TZK11 Tape Drive
3.6.2 Setting the SCSI ID of the Replacement TZK10/TZK11 Tape Drive
To set the SCSI ID of the replacement TZK10/TZK11 tape drive, follow these
steps:
1. Note the positions of the SCSI ID and Parity jumper wires on the TZK10
/TZK11 tape drive you removed. Figure 3–18 shows the location of the
SCSI ID jumper wires and the recommended SCSI ID for tape drives.
2. Set the SCSI ID and Parity jumper wires on the replacement TZK10
/TZK11 tape drive to the same positions as the TZK10/TZK11 tape drive
you removed.
3–26 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.6 Removing a TZK10/TZK11 Tape Drive
Figure 3–18 Locations of the SCSI ID Jumper Wires on the TZK10/TZK11
Tape Drive
SCSI ID
Jumper Wires
Parity 2
1 0
SCSI ID
Select
Note: The SCSI ID shown is 5.
RE_EN06240A_91
Refer to the MicroVAX 3100 BA42B Enclosure System Options manual for more
information about setting the SCSI ID of the TZK10/TZK11 tape drives.
Removing and Replacing Field Replaceable Units 3–27
Removing and Replacing Field Replaceable Units
3.7 Removing a TLZ06/TLZ07 Tape Drive
3.7 Removing a TLZ06/TLZ07 Tape Drive
The TLZ06/TLZ07 tape drive (when installed) can be on the right side or the
left side of the lower drive-mounting shelf, when viewed from the front. The
following procedure describes how to remove a TLZ06/TLZ07 tape drive from
the right side of the lower drive-mounting shelf. The procedure for removing
the TLZ06/TLZ07 tape drive from the left side of the lower drive-mounting
shelf is the same. To remove a TLZ06/TLZ07 tape drive from the BA42B
Enclosure, follow these steps:
1. Remove the enclosure cover (refer to Section 3.1).
2. Remove the upper drive-mounting shelf (refer to Section 3.3).
Note
•
You can disconnect the cables from the drive more easily after
you remove the drive from the drive-mounting shelf.
•
When you disconnect the cables, note which cables connect
to which drives. On the SCSI cable, note the number on the
connector pull-tab.
3. Loosen the captive screw that secures the mounting bracket to the
drive-mounting shelf (refer to Figure 3–19).
3–28 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.7 Removing a TLZ06/TLZ07 Tape Drive
Figure 3–19 Removing the TLZ06/TLZ07 Tape Drive
TLZ06 Tape Drive
Captive Screw
MLO-009826
4. Lift the left side of the TLZ06/TLZ07 tape drive. Slide the TLZ06/TLZ07
tape drive to the left until the tabs on the right side of the mounting
bracket are clear of the cutouts in the lower drive-mounting shelf.
5. Disconnect the power cable from the back of the TLZ06/TLZ07 tape drive.
Figure 1–3 shows the power cables in the BA42B Enclosure.
6. Disconnect the SCSI cable from the back of the TLZ06/TLZ07 tape drive
by pulling the pull-tab. Figure 1–4 shows the signal cables in the BA42B
Enclosure.
7. Lift the TLZ06/TLZ07 tape drive out of the system unit.
Removing and Replacing Field Replaceable Units 3–29
Removing and Replacing Field Replaceable Units
3.7 Removing a TLZ06/TLZ07 Tape Drive
3.7.1 Separating the TLZ06/TLZ07 Tape Drive from the Mounting
Bracket
When you install a replacement TLZ06/TLZ07 tape drive, you must use the
mounting bracket (74-42449-01) that is attached to the faulty TLZ06/TLZ07
tape drive (TLZ06-AA, TLZ07-AA). To separate the mounting bracket from the
faulty TLZ06/TLZ07 tape drive, follow these steps:
1. Note which holes are used for attaching the mounting bracket to the drive
before you remove it. You must use the same holes for the replacement.
2. Remove the four screws (90-10961-03) that secure the mounting bracket
to the TLZ06/TLZ07 tape drive with a Phillips screwdriver (refer to
Figure 3–20).
3. Separate the mounting bracket from the TLZ06/TLZ07 tape drive.
Figure 3–20 Separating the Mounting Bracket from the TLZ06/TLZ07 Tape
Drive
Phillips Screws (4)
TLZ06 Mounting Bracket
TLZ06 Tape Drive
MLO-009937
4. Keep the mounting bracket and the four screws in a safe place because you
must use them to install the replacement TLZ06/TLZ07 tape drive.
3–30 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.7 Removing a TLZ06/TLZ07 Tape Drive
3.7.2 Setting the SCSI ID and Option Switches of the Replacement
TLZ06/TLZ07 Tape Drive
To set the SCSI ID and option switches of the replacement TLZ06/TLZ07 tape
drive, follow these steps:
1. Note the positions of the SCSI ID and option switches on the TLZ06/TLZ07
tape drive you removed. Figure 3–21 shows the location of the SCSI ID
and option switches and the recommended SCSI ID for tape drives.
2. Set the SCSI ID and option switches on the replacement TLZ06/TLZ07 tape
drive to the same positions as the SCSI ID switches of the TLZ06/TLZ07
tape drive you removed.
Figure 3–21 Locations of the SCSI ID and Option Switches on the
TLZ06/TLZ07 Tape Drive
O
F
F
2
1
4
3
6
5
8
7
O
F
F
1
8
7
6
5
4
3
2
Mode and SCSI
Address Switches
GA_EN00144A_92A
Refer to the MicroVAX 3100 BA42B Enclosure System Options manual for more
information about setting the SCSI ID and option switches on TLZ06/TLZ07
tape drives.
Removing and Replacing Field Replaceable Units 3–31
Removing and Replacing Field Replaceable Units
3.8 Removing an RZ-Series Disk Drive
3.8 Removing an RZ-Series Disk Drive
Depending on the system configuration, the upper drive-mounting shelf can
contain one, two, or three SCSI disk drives. The disk drives can be any
combination of the RZ-series disk drives. The RZ-series disk drives include the
following devices:
•
RZ23L disk drive
•
RZ24 disk drive
•
RZ24L disk drive
•
RZ25 disk drive
•
RZ25L disk drive
•
RZ25M disk drive
•
RZ26 disk drive
•
RZ26L disk drive
•
RZ28 disk drive
An RZ-series disk drive on the upper drive-mounting shelf may be removed
from the the BA42B enclosure without removing the shelf (see Section 3.8.1).
To remove an RZ-series drive on the lower shelf, it is first necessary to remove
the upper shelf (see Section 3.8.2).
3.8.1 Removing an RZ-Series Disk Drive from the Upper
Drive-Mounting Shelf
To remove an RZ-series disk drive from the upper drive-mounting shelf, follow
these steps:
1. Remove the enclosure cover (see Section 3.1).
Note
•
You can disconnect the cables from a disk drive more easily
after you remove the disk drive from the drive-mounting shelf.
•
When disconnecting cables, you must note which cables connect
to which drives. On the SCSI cable, note the number on the
connector pull-tab.
2. Press and hold the spring clip that locks the disk drive in position.
3–32 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.8 Removing an RZ-Series Disk Drive
3. Push the disk drive towards the spring clip until the rubber grommets
under the disk drive are released from the cutouts in the drive-mounting
shelf (see Figure 3–22). Lift the disk drive up from the drive-mounting
shelf and release the spring clip.
4. Disconnect the SCSI cable from the back of the disk drive by pulling the
pull-tab.
Figure 1–4 shows the signal cables in the BA42B enclosure.
5. Disconnect the power cable from the back of the disk drive.
Figure 1–3 shows the power cables in the BA42B enclosure.
Figure 3–22 Removing RZ-Series Disk Drives from the Upper Drive-Mounting
Shelf
RZ24 Disk Drive
Spring Clip
GA_EN00225A_92A
Removing and Replacing Field Replaceable Units 3–33
Removing and Replacing Field Replaceable Units
3.8 Removing an RZ-Series Disk Drive
3.8.2 Removing an RZ-Series Disk Drive from the Lower
Drive-Mounting Shelf
Depending on the system configuration, RZ-series disk drives may be installed
on the left side and the right side of the lower drive-mounting shelf, when
viewed from the front. To remove an RZ-series disk drive from the lower
drive-mounting shelf, follow these steps:
1. Remove the enclosure cover (see Section 3.1).
2. Remove the upper drive-mounting shelf (see Section 3.3).
Note
•
You can disconnect the cables from a disk drive more easily
after you remove the drive from the drive-mounting shelf.
•
When disconnecting the cables, you must note which cables
connect to which drives. On the SCSI cable, note the number
on the connector pull-tab.
3. Press and hold the spring clip that locks the disk drive in position (see
Figure 3–23).
4. Push the disk drive towards the spring clip until the rubber grommets
under the disk drive are released from the cutouts in the drive-mounting
shelf (see Figure 3–23). Lift the disk drive up from the lower drivemounting shelf, and release the spring clip.
5. Disconnect the SCSI cable from the back of the disk drive by pulling the
pull-tab.
Figure 1–4 shows the signal cables in the BA42B enclosure.
6. Disconnect the power cable from the back of the disk drive.
Figure 1–3 shows the power cables in the BA42B enclosure.
7. Remove the support plate from the disk drive (see Section 3.8.3).
3–34 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.8 Removing an RZ-Series Disk Drive
Figure 3–23 Removing an RZ-Series Disk Drive from the Lower DriveMounting Shelf
RZ24 Disk Drive
Spring Clip
RE_EN06233A_91
Removing and Replacing Field Replaceable Units 3–35
Removing and Replacing Field Replaceable Units
3.8 Removing an RZ-Series Disk Drive
3.8.3 Separating the Support Plate from an RZ23L or RZ24 Disk Drive
When you are replacing an RZ23L or RZ24 disk drive, you must remove the
support plate (74-41364-01) and the rubber grommets (12-31734-01) that are
attached to the faulty disk drive (RZ23L-E or RZ24-E) and install these items
on the replacement drive. The following procedure describes how to remove the
support plate and rubber grommets from an RZ23L disk drive. The procedure
for removing the support plate and rubber grommets from an RZ24 disk drive
is the same. To remove the support plate and rubber grommets from an RZ23L
disk drive, follow these steps:
1. Position the disk drive so that the bottom of the disk drive faces up.
2. Remove the four screws and attached grommets (see Figure 3–24). These
screws secure the support plate to the disk drive.
3. Remove the support plate from the disk drive.
4. Keep the four screws with the attached grommets and the support plate in
a safe place. You must install them on the replacement disk drive.
3–36 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.8 Removing an RZ-Series Disk Drive
Figure 3–24 Separating the Support Plate from the Disk Drive
Grommets (4)
Support Plate
RZ23L Disk Drive
RE_EN06451A_91
Removing and Replacing Field Replaceable Units 3–37
Removing and Replacing Field Replaceable Units
3.8 Removing an RZ-Series Disk Drive
3.8.4 Separating the Mounting Bracket from an RZ24L, RZ25, RZ25L,
RZ26, RZ26L, or RZ28 Disk Drive
When you are replacing an RZ24L, RZ25, RZ25L, RZ25M, RZ26, RZ26L, or
RZ28 disk drive, you must remove the mounting bracket (74-44226-01) and the
rubber grommets (12-31734-01) that are attached to the faulty disk drive and
install these items on the replacement drive. The following procedure describes
how to remove the mounting bracket and rubber grommets from an RZ26 disk
drive. The procedure for removing the mounting bracket and rubber grommets
from the other disk drives is the same. To remove the mounting bracket and
rubber grommets from an RZ26 disk drive, follow these steps:
1. Position the disk drive so that the bottom of the disk drive faces up.
2. Remove the four screws and attached grommets (see Figure 3–25). These
screws secure the mounting bracket to the disk drive.
3. Remove the mounting bracket from the disk drive.
4. Keep the four screws with the attached grommets and the mounting
bracket in a safe place. You must install them on the replacement disk
drive.
3–38 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.8 Removing an RZ-Series Disk Drive
Figure 3–25 Separating the Mounting Bracket from the RZ26 Disk Drive
Grommets
Mounting
Bracket
MLO-011302
Removing and Replacing Field Replaceable Units 3–39
Removing and Replacing Field Replaceable Units
3.8 Removing an RZ-Series Disk Drive
3.8.5 Setting the SCSI ID on the Replacement Disk Drive
To set the SCSI ID on a replacement disk drive, follow these steps:
1. Note the SCSI ID switch settings on the disk drive you removed. The
locations of the SCSI ID jumper wires on the various types of disk drive
are shown in the following figures:
•
RZ23L—see Figure 3–26
•
RZ24—see Figure 3–27
•
RZ24L—see Figure 3–28
•
RZ25—see Figure 3–29
•
RZ25L—see Figure 3–30
•
RZ25M—see Figure 3–31
•
RZ26—see Figure 3–32
•
RZ26L—see Figure 3–32
•
RZ28—see Figure 3–32
2. Set the SCSI ID switches on the replacement disk drive to the same
settings as the SCSI ID switches of the disk drive you removed.
See the MicroVAX 3100 BA42B Enclosure Systems Options manual for more
information about setting the SCSI ID of the RZ-series disk drives.
3–40 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.8 Removing an RZ-Series Disk Drive
Figure 3–26 RZ23L Disk Drive SCSI ID Jumper Wire Locations
E3
E2
E1
RE_EN06357A_91
Figure 3–27 RZ24 Disk Drive SCSI ID Jumper Wire Locations
SCSI Connector
E1 E2 E3
SCSI ID Jumper Wires
Power Connector
RE_EN05183A_90
Removing and Replacing Field Replaceable Units 3–41
Removing and Replacing Field Replaceable Units
3.8 Removing an RZ-Series Disk Drive
Figure 3–28 RZ24L Disk Drive SCSI ID Jumper Wire Locations
A0
A2 A1
GA_EN00180A_92A
3–42 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.8 Removing an RZ-Series Disk Drive
Figure 3–29 RZ25 Disk Drive SCSI ID Jumper Wire Locations
P3 P2 P1
RE_EN06365C_91
Removing and Replacing Field Replaceable Units 3–43
Removing and Replacing Field Replaceable Units
3.8 Removing an RZ-Series Disk Drive
Figure 3–30 RZ25L Disk Drive SCSI ID Jumper Wire Locations
Grommets
Mounting
Bracket
A2
A0 A1
A0
A2 A1
Power
Connector
SCSI
Connector
MLO-012054
3–44 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.8 Removing an RZ-Series Disk Drive
Figure 3–31 RZ25M Disk Drive SCSI ID Jumper Wire Locations
6
4
2
5
SCSI
Connector
Power
Connector
3
1
Mounting
Bracket
Grommets
MLO-013146
Removing and Replacing Field Replaceable Units 3–45
Removing and Replacing Field Replaceable Units
3.8 Removing an RZ-Series Disk Drive
Figure 3–32 RZ26/RZ26L/RZ28 Disk Drive SCSI ID Jumper Wire Locations
2
0 1
GA_EN00184A_92A
Note
Figure 3–32 shows an RZ26 as an example. The SCSI ID jumpers on
the RZ26L and RZ28 are identical.
3–46 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.9 Removing an RRD42 CDROM Drive
3.9 Removing an RRD42 CDROM Drive
Note
The illustrations in this section show how to remove and install the
RRD42 CDROM drive in the left-hand position of the lower drivemounting shelf, when viewed from the front. Installation in the
right-hand position requires the mounting bracket to be reversed on
the RRD42 CDROM drive. Note how the bracket is attached before
removing it from the drive.
To remove an RRD42 CDROM drive from the BA42B Enclosure, follow these
steps:
1. Remove the enclosure cover (refer to Section 3.1).
2. Remove the upper drive-mounting shelf (refer to Section 3.3).
Note
•
You can disconnect the cables from the drive more easily after
you remove the drive from the drive-mounting shelf.
•
When you disconnect the cables, you must note which cables
connect to which drives. On the SCSI cable, note the number
on the connector pull-tab.
3. Loosen the captive screw that secures the mounting bracket to the
drive-mounting shelf (refer to Figure 3–33).
Removing and Replacing Field Replaceable Units 3–47
Removing and Replacing Field Replaceable Units
3.9 Removing an RRD42 CDROM Drive
Figure 3–33 Removing the RRD42 CDROM Drive
Captive Screw
RRD42 CDROM Drive
RE_EN06241A_91
4. Lift the right side of the RRD42 CDROM drive. Slide the RRD42 CDROM
drive to the right until the tabs on the left side of the mounting bracket are
clear of the cutouts in the lower drive-mounting shelf.
5. Disconnect the power cable from the back of the RRD42 CDROM drive.
Figure 1–3 shows the power cables in the BA42B Enclosure.
6. Disconnect the SCSI cable from the back of the RRD42 CDROM drive by
pulling the pull-tab. Figure 1–4 shows the signal cables in the BA42B
Enclosure.
7. Lift the RRD42 CDROM drive, which has its bracket attached, out of the
system unit.
Caution
The RRD42 CDROM drive has a plastic cover that protects the drive
from dust. Do not remove this cover when replacing the RRD42
CDROM drive or setting the SCSI ID.
3–48 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.9 Removing an RRD42 CDROM Drive
3.9.1 Separating the RRD42 CDROM Drive from the Mounting Bracket
When you install a replacement RRD42 CDROM drive, you must use the
mounting bracket (74-42449-01) that is attached to the faulty RRD42 CDROM
drive (RRD42-AA). To separate the mounting bracket from the faulty RRD42
CDROM drive, follow these steps:
1. Note how the bracket is attached in relationship to the RRD42 CDROM
drive.
2. Remove the four screws (90-10961-03) that secure the mounting bracket to
the RRD42 CDROM drive (refer to Figure 3–34).
3. Separate the mounting bracket from the RRD42 CDROM drive.
Note
The following illustration shows how the mounting bracket is attached
when the RRD42 CDROM drive is mounted in the left-hand position.
If yours is mounted in the right-hand position, the bracket will be
reversed.
Removing and Replacing Field Replaceable Units 3–49
Removing and Replacing Field Replaceable Units
3.9 Removing an RRD42 CDROM Drive
Figure 3–34 Separating the Mounting Bracket from the RRD42 CDROM Drive
RRD42 CDROM Drive
RRD42 Mounting Bracket
Phillips Screws (4)
MLO-009939
3–50 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.9 Removing an RRD42 CDROM Drive
4. Keep the mounting bracket and the four screws in a safe place because you
must use the same bracket and screws to install the replacement RRD42
CDROM drive.
Note
When you attach the mounting bracket to the replacement RRD42
CDROM drive, align the holes on the mounting bracket that are not
marked by a Q with the screw holes on the sides of the RRD42 CDROM
drive.
3.9.2 Setting the SCSI ID on the Replacement RRD42 CDROM Drive
To set the SCSI ID on the replacement RRD42 CDROM drive, follow these
steps:
1. Note the SCSI ID and Parity jumper wires on the RRD42 CDROM drive
you removed. Figure 3–35 shows the location of the SCSI ID jumper wires.
2. Set the SCSI ID and Parity jumper wires on the replacement RRD42
CDROM drive to the same positions as the SCSI ID jumper wires on the
RRD42 CDROM drive you removed.
Removing and Replacing Field Replaceable Units 3–51
Removing and Replacing Field Replaceable Units
3.9 Removing an RRD42 CDROM Drive
Figure 3–35 RRD42 SCSI ID Jumper Wire Locations
SCSI ID
Jumper Wires
Parity
0
1
2
Note: The SCSI ID shown is 4.
RE_EN06242A_91
Refer to the MicroVAX 3100 BA42B Enclosure System Options manual for more
information about setting the SCSI ID of the RRD42 CDROM drive.
3–52 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.10 Removing an RRD43 CDROM Drive
3.10 Removing an RRD43 CDROM Drive
Note
The illustrations in this section show how to remove and install the
RRD43 CDROM drive in the left-hand position of the lower drivemounting shelf, when viewed from the front. Installation in the
right-hand position requires the mounting bracket to be reversed on
the RRD43 CDROM drive. Note how the bracket is attached before
removing it from the drive.
To remove an RRD43 CDROM drive from the BA42B Enclosure, follow these
steps:
1. Remove the enclosure cover (refer to Section 3.1).
2. Remove the upper drive-mounting shelf (refer to Section 3.3).
Note
•
You can disconnect the cables from the drive more easily after
you remove the drive from the drive-mounting shelf.
•
When you disconnect the cables, you must note which cables
connect to which drives. On the SCSI cable, note the number
on the connector pull-tab.
3. Loosen the captive screw that secures the mounting bracket to the
drive-mounting shelf (refer to Figure 3–36).
Removing and Replacing Field Replaceable Units 3–53
Removing and Replacing Field Replaceable Units
3.10 Removing an RRD43 CDROM Drive
Figure 3–36 Removing the RRD43 CDROM Drive
RRD43
Captive Screw
MLO-012260
4. Lift the right side of the RRD43 CDROM drive. Slide the RRD43 CDROM
drive to the right until the tabs on the left side of the mounting bracket are
clear of the cutouts in the lower drive-mounting shelf.
5. Disconnect the power cable from the back of the RRD43 CDROM drive.
Figure 1–3 shows the power cables in the BA42B Enclosure.
6. Disconnect the SCSI cable from the back of the RRD43 CDROM drive by
pulling the pull-tab. Figure 1–4 shows the signal cables in the BA42B
Enclosure.
7. Lift the RRD43 CDROM drive, which has its bracket attached, out of the
system unit.
Caution
The RRD43 CDROM drive has a plastic cover that protects the drive
from dust. Do not remove this cover when replacing the RRD43
CDROM drive or setting the SCSI ID.
3–54 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.10 Removing an RRD43 CDROM Drive
3.10.1 Separating the RRD43 CDROM Drive from the Mounting Bracket
When you install a replacement RRD43 CDROM drive, you must use the
mounting bracket (74-42449-01) that is attached to the faulty RRD43 CDROM
drive (RRD43-AA). To separate the mounting bracket from the faulty RRD43
CDROM drive, follow these steps:
1. Note how the bracket is attached in relationship to the RRD42 CDROM
drive.
2. Remove the four screws (90-10556-12) that secure the mounting bracket to
the RRD43 CDROM drive (refer to Figure 3–37).
3. Separate the mounting bracket from the RRD43 CDROM drive.
Note
The Figure 3–37 shows how the mounting bracket is attached when the
RRD43 CDROM drive is mounted in the left-hand position. If yours is
mounted in the right-hand position, the bracket will be reversed.
Removing and Replacing Field Replaceable Units 3–55
Removing and Replacing Field Replaceable Units
3.10 Removing an RRD43 CDROM Drive
Figure 3–37 Separating the Mounting Bracket from the RRD43 CDROM Drive
Power
Connector
SCSI ID
Jumper Wires
SCSI
Cable
Connector
SCSI ID
1
2
4 Parity
Note: The SCSI ID Shown is 1
MLO-012257
3–56 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.10 Removing an RRD43 CDROM Drive
4. Keep the mounting bracket and the four screws in a safe place because you
must use the same bracket and screws to install the replacement RRD43
CDROM drive.
Note
When you attach the mounting bracket to the replacement RRD43
CDROM drive, align the holes on the mounting bracket that are not
marked by a Q with the screw holes on the sides of the RRD43 CDROM
drive.
3.10.2 Setting the SCSI ID on the Replacement RRD43 CDROM Drive
To set the SCSI ID on the replacement RRD43 CDROM drive, follow these
steps:
1. Note the SCSI ID and Parity jumper wires on the RRD43 CDROM drive
you removed. Figure 3–37 shows the location of the SCSI ID jumper wires.
2. Set the SCSI ID and Parity jumper wires on the replacement RRD43
CDROM drive to the same positions as the SCSI ID jumper wires on the
RRD43 CDROM drive you removed.
Refer to the MicroVAX 3100 BA42B Enclosure System Options manual for more
information about setting the SCSI ID of the RRD43 CDROM drive.
Removing and Replacing Field Replaceable Units 3–57
Removing and Replacing Field Replaceable Units
3.11 Removing the Upper and Lower Drive-Mounting Shelf Combination
3.11 Removing the Upper and Lower Drive-Mounting Shelf
Combination
Caution
Static electricity can damage integrated circuits. Wear a wrist strap
and place an antistatic mat under the system when working with the
internal parts of the system.
To reach the CPU module and some of the components that connect to it, you
must remove the upper drive-mounting shelf and the lower drive-mounting
shelf. To save time, you can remove both of the drive-mounting shelves as
one unit with the devices and cables in place. To remove the upper and lower
drive-mounting shelf combination, follow these steps:
1. On the power supply, disconnect the power cables that supply power to the
upper and lower drive-mounting shelves.
2. Loosen the two captive screws that secure the upper drive-mounting shelf
to the power supply (refer to Figure 3–38).
3. Loosen the two captive screws that secure the lower drive-mounting shelf
to the enclosure (refer to Figure 3–38).
4. Loosen the two panhead screws (90-09984-07) that secure the lower
drive-mounting shelf to the enclosure (refer to Figure 3–38).
3–58 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.11 Removing the Upper and Lower Drive-Mounting Shelf Combination
Figure 3–38 Removing the Upper and Lower Drive-Mounting Shelf
Combination
Captive
Screws (2)
Power
Supply
Unit
Captive
Screws (2)
Upper Drive
Mounting Shelf
Lower Drive
Mounting Shelf
Panhead Screws (2)
MLO-009942a
5. Slide the upper and lower drive-mounting shelf combination toward the
front of the enclosure as far as it will go.
Caution
When you disconnect the SCSI cable from the CPU module, ensure that
you do not damage any of the MS44 or MS44L memory modules.
Removing and Replacing Field Replaceable Units 3–59
Removing and Replacing Field Replaceable Units
3.11 Removing the Upper and Lower Drive-Mounting Shelf Combination
6. Disconnect the SCSI cable from the CPU module (refer to Figure 3–39).
Figure 3–39 Disconnecting the SCSI Cable
SCSI Cable
MLO-009877
7. Lift the upper and lower drive-mounting shelf combination out of the
system enclosure with the devices and cables in place.
If you have already removed the upper and lower drive-mounting shelves as a
unit, they can be seperated as follows by lossening the top captive screw (see
Figure 3–40).
3–60 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.11 Removing the Upper and Lower Drive-Mounting Shelf Combination
Figure 3–40 Separating the Upper Drive-Mounting Shelf from the Lower
Drive-Mounting Shelf
Captive Screw
Upper Drive
Mounting Shelf
Lower Drive
Mounting Shelf
RE_EN06490A_91
Removing and Replacing Field Replaceable Units 3–61
Removing and Replacing Field Replaceable Units
3.12 Removing the Internal SCSI Cable from the BA42B Enclosure
3.12 Removing the Internal SCSI Cable from the BA42B
Enclosure
To remove the SCSI cable from the BA42B Enclosure, follow these steps:
1. Remove the upper and lower drive-mounting shelf combination (refer to
Section 3.11).
2. Disconnect the SCSI cable from the disk drives on the upper drivemounting shelf.
3. Loosen the captive screw that secures the upper drive-mounting shelf to
the lower drive-mounting shelf (refer to Figure 3–40).
4. Lift the left side of the upper drive-mounting shelf and slide it to the
left until the tabs on the right side of the upper drive-mounting shelf are
released from the cutouts in the lower drive-mounting shelf.
5. Disconnect the SCSI cable from the mass storage devices on the lower
drive-mounting shelf.
3–62 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.13 Removing the KZDDA SCSI Daughter Board and Cable
3.13 Removing the KZDDA SCSI Daughter Board and Cable
Caution
Static electricity can damage integrated circuits. Wear a wrist strap
and place an antistatic mat under the system unit when working with
the internal parts of the system unit.
To remove the SCSI daughter board from the CPU module:
1. Remove the enclosure cover (refer to Section 3.1).
2. Remove the upper and lower drive-mounting shelf combination (refer to
Section 3.11).
3. Disconnect the KZDDA SCSI cable from the connector slot on the KZDDA
SCSI daughter board as shown in Figure 3–41.
Removing and Replacing Field Replaceable Units 3–63
Removing and Replacing Field Replaceable Units
3.13 Removing the KZDDA SCSI Daughter Board and Cable
Figure 3–41 Disconnecting the KZDDA SCSI Cable
1
2
MLO-010966
!
"
KZDDA SCSI cable
KZDDA SCSI daughter board and connector
4. Use a standoff tool as shown in Figure 3–42, or press the latch on one of
the standoff pillars to remove the SCSI daughter board as follows.
Note
The standoff pillars contain two components: a push-button rivet
(12-35477-02) and a standoff (12-35477-03).
3–64 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.13 Removing the KZDDA SCSI Daughter Board and Cable
Figure 3–42 Removing the KZDDA SCSI Daughter Board
1
3
2
MLO-010965
!
"
#
KZDDA SCSI daughter board
Standoff
Mother board connector
5. Use the standoff tool, or press the latch on the other standoff pillar
and push up that corner of the KZDDA SCSI daughter board until it is
released.
6. Push up the daughter board until the connectors on it are disengaged from
the connector on the mother board.
7. Lift up and remove the daughter board from the enclosure.
To remove the KZDDA SCSI cable from the enclosure, use a Phillips screwdriver to
disconnect the cable from the rear of the BA42B enclosure as shown in Figure 3–43.
Removing and Replacing Field Replaceable Units 3–65
Removing and Replacing Field Replaceable Units
3.13 Removing the KZDDA SCSI Daughter Board and Cable
Figure 3–43 Removing the KZDDA SCSI Cable from the Enclosure
1
3
2
MLO-010964
!
"
#
KZDDA SCSI cable connector
Phillips screw
Washer
3–66 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.14 Removing the DSW42 Synchronous Communications Option
3.14 Removing the DSW42 Synchronous Communications
Option
The DSW42 synchronous communications option contains three components
that you must remove from the CPU module:
•
A logic board (54-20640-01)
•
An input/output cable (17-02942-01)
•
An input/output module (70-28542-01)
To remove the DSW42 synchronous communications option from the BA42B
Enclosure, follow these steps:
1. Remove the enclosure cover (refer to Section 3.1).
2. Remove the upper and lower drive-mounting shelf combination (refer to
Section 3.11).
3. Remove the logic board, the input/output cable, and the input/output
module according to the procedures in the following subsections.
3.14.1 Removing the DSW42 Logic Board
Caution
Static electricity can damage integrated circuits. Wear a wrist strap
and place an antistatic mat under the system unit when working with
the internal parts of the system unit.
1. Press the latch on one of the standoff pillars (refer to Figure 3–44) and
push up the corner of the DSW42 logic board until the DSW42 logic board
is released.
Note
The standoff pillars contain two components: a push-button rivet
(12-35477-02) and a standoff (12-35477-03).
Removing and Replacing Field Replaceable Units 3–67
Removing and Replacing Field Replaceable Units
3.14 Removing the DSW42 Synchronous Communications Option
Figure 3–44 Removing the DSW42 Logic Board
Standoff Pillars (2)
DSW42 Logic Board
CPU Module
MLO-009880
2. Press the latch on the other standoff pillar and push up that corner of the
DSW42 logic board until the DSW42 logic board is released.
3. Push up the DSW42 logic board until the connectors on the DSW42
logic board disengage from the connectors on the CPU module (refer to
Figure 3–44).
4. Remove the DSW42 logic board from the enclosure.
3.14.2 Removing the DSW42 Input/Output Cable
To remove the DSW42 input/output cable, follow these steps:
1. Disconnect the DSW42 input/output cable from the CPU module (refer to
Figure 3–45).
2. Disconnect the DSW42 input/output cable from the DSW42 input/output
module on the back of the enclosure (refer to Figure 3–45).
3–68 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.14 Removing the DSW42 Synchronous Communications Option
3. Remove the DSW42 input/output cable from the enclosure.
Figure 3–45 Removing the DSW42 Input/Output Cable
DSW42 Input/Output Module
DSW42 Input/Output Cable
CPU Module
MLO-009878
3.14.3 Removing the DSW42 Input/Output Module
To remove the DSW42 input/output module, follow these steps:
1. Disconnect the external cables that connect to synchronous ports 0 and 1
on the back of the system unit (if not already disconnected).
2. Disconnect the DSW42 input/output cable from the DSW42 input/output
module (if not already disconnected).
3. Press the spring clip on the DSW42 input/output module. Pull the DSW42
input/output module towards the front of the enclosure until it is released
from the back of the enclosure (refer to Figure 3–46).
Removing and Replacing Field Replaceable Units 3–69
Removing and Replacing Field Replaceable Units
3.14 Removing the DSW42 Synchronous Communications Option
4. Lift up and remove the DSW42 input/output module from the enclosure.
Figure 3–46 Removing the DSW42 Input/Output Module
Spring Clip
DSW42 Input/Output Module
CPU Module
MLO-009888
3–70 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.15 Removing the DHW42 Asynchronous Communications Option
3.15 Removing the DHW42 Asynchronous Communications
Option
The DHW42 asynchronous communications option contains three components
that you must remove from the system enclosure as follows:
•
A logic board (54-20662-01)
•
An input/output cable (17-02942-01)
•
One of the following input/output modules:
8 data-only line input/output module (70-28542-02)
16 data-only line input/output module (70-28542-03)
8 modem control line input/output module (70-28543-01)
To remove the DHW42 asynchronous communications option from the BA42B
Enclosure, follow these steps:
1. Remove the enclosure cover (refer to Section 3.1).
2. Remove the upper and lower drive-mounting shelf combination (refer to
Section 3.11).
3. Remove the logic board, the input/output cable, and the input/output
module according to the procedures in the following subsections.
3.15.1 Removing the DHW42 Logic Board
Caution
Static electricity can damage integrated circuits. Wear a wrist strap
and place an antistatic mat under the system unit when working with
the internal parts of the system unit.
1. Press the latch on one of the standoff pillars (refer to Figure 3–47) and
push up the corner of the DHW42 logic board until the DHW42 logic board
is released.
Removing and Replacing Field Replaceable Units 3–71
Removing and Replacing Field Replaceable Units
3.15 Removing the DHW42 Asynchronous Communications Option
Figure 3–47 Removing the DHW42 Logic Board
Standoff Pillars (2)
DHW42 Logic Board
CPU Module
MLO-009879
2. Press the latch on the other standoff pillar and push up the corner of the
DHW42 logic board until the latch releases the DHW42 logic board.
3. Push up the DHW42 logic board until the connectors on the DHW42
logic board disengage from the connectors on the CPU module (refer to
Figure 3–47).
4. Remove the DHW42 logic board from the enclosure.
3.15.2 Removing the DHW42 Input/Output Cable
To remove the DHW42 input/output cable, follow these steps:
1. Disconnect the DHW42 input/output cable from the CPU module (refer to
Figure 3–48).
2. Disconnect the DHW42 input/output cable from the DHW42 input/output
module on the back of the enclosure (refer to Figure 3–48).
3–72 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.15 Removing the DHW42 Asynchronous Communications Option
3. Remove the DHW42 input/output cable from the enclosure.
Figure 3–48 Removing the DHW42 Input/Output Cable
DSW42 Input/Output Module
DSW42 Input/Output Cable
CPU Module
MLO-009881
3.15.3 Removing the DHW42 Input/Output Module
To remove the DHW42 input/output module, follow these steps:
1. Disconnect the external cables that are connected to asynchronous ports A
and B on the back of the system unit (if not already disconnected).
2. Disconnect the DHW42 input/output cable from the DHW42 input/output
module (if not already disconnected).
3. Press the spring clip on the DHW42 input/output module. Pull the DHW42
input/output module towards the front of the enclosure until it is released
from the back of the enclosure (refer to Figure 3–49).
Removing and Replacing Field Replaceable Units 3–73
Removing and Replacing Field Replaceable Units
3.15 Removing the DHW42 Asynchronous Communications Option
4. Lift up and remove the DHW42 input/output module from the enclosure.
Figure 3–49 Removing the DHW42 Input/Output Module
Spring Clip
DSW42 Input/Output Module
CPU Module
MLO-009889
3–74 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.16 Removing the CPU Module
3.16 Removing the CPU Module
To remove the CPU module from the BA42B Enclosure, follow these steps:
1. Remove the ac power from the BA42B Enclosure.
2. Disconnect the external cables, loopback connectors, and terminators from
the back of the system unit.
3. Remove the enclosure cover (refer to Section 3.1).
4. Remove the upper and lower drive-mounting shelf combination (refer to
Section 3.11).
5. If installed, remove the DSW42 logic board (refer to Section 3.14.1) and
disconnect the DSW42 input/output cable from the CPU module (refer to
Section 3.14.2).
6. If installed, remove the DHW42 logic board (refer to Section 3.15.1) and
disconnect the DHW42 input/output cable from the CPU module (refer to
Section 3.15.2).
7. Disconnect the MS44 or MS44L memory modules from the CPU module
(refer to Section 3.2).
8. Disconnect the power cable from the CPU module (refer to Figure 3–50).
Removing and Replacing Field Replaceable Units 3–75
Removing and Replacing Field Replaceable Units
3.16 Removing the CPU Module
Figure 3–50 Disconnecting the Cables from the CPU Module
SCSI Ribbon Cable
Power Cable
CPU Module
MLO-009890
3–76 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.16 Removing the CPU Module
9. Disconnect the SCSI ribbon cable (17-02944-01) from the CPU module
(refer to Figure 3–50).
Caution
Ensure that you do not damage any of the CPU module components by
exerting too much force on the components.
10. Press the two spring clips (marked by arrows in Figure 3–51) that secure
the CPU module in position. The CPU module moves forward under the
tension of the connector gaskets. If necessary, slide the CPU module back
until it disengages from the ten keyhole cutouts (refer to Figure 3–51).
11. Use your finger, in the semicircular cutout on the front edge of the CPU
module, to lift up the front edge of the CPU module (refer to Figure 3–51).
12. While supporting the front of the CPU module with one hand, guide the
connectors on the back of the CPU module out of the corresponding cutouts
on the back of the enclosure.
13. Remove the CPU module from the enclosure.
Removing and Replacing Field Replaceable Units 3–77
Removing and Replacing Field Replaceable Units
3.16 Removing the CPU Module
Figure 3–51 Removing the CPU Module
3
1
PUSH
PUSH
2
! Spring clips
" Semicircular cutout
# Keyhole cutouts (10)
3–78 Removing and Replacing Field Replaceable Units
MLO-012381
Removing and Replacing Field Replaceable Units
3.17 Replacing the CPU Module
3.17 Replacing the CPU Module
To install a replacement CPU module in a BA42B Enclosure, follow these
steps:
Caution
Static electricity can damage integrated circuits. Wear a wrist strap
and place an antistatic mat under the system when working with the
internal parts of the system.
1. Place the CPU module in the enclosure so that the connectors on the
CPU module align with the corresponding cutouts in the back panel of the
enclosure. Use the ThinWire Ethernet port as an anchor point to adjust
the position of the CPU module correctly.
2. Align the keyhole cutouts in the CPU module with the corresponding
standoff pillars in the base of the enclosure.
Caution
Ensure that you do not damage any of the CPU module components by
exerting pressure on the components.
3. Press the CPU module at the two positions marked push. The spring clips
push the standoff pillars into the keyhole cutouts that secure the CPU
module in position.
4. Connect the DSSI cable to the CPU module.
5. Connect the SCSI cable (17-02944-01) to the CPU module (refer to
Figure 3–50 for the location of the SCSI cable).
6. Connect the power cable to the CPU module (refer to Figure 3–50 for the
location of the power cable).
7. Install the MS44 and MS44L memory modules that you removed from the
original CPU module. Follow the steps in Section 3.2 in reverse order to
install the memory modules.
8. Install the DSW42 logic board, and connect the DSW42 input/output cable
if fitted. Follow the steps in Section 3.14.1 and Section 3.14.2 in reverse
order to install the logic board and cable.
Removing and Replacing Field Replaceable Units 3–79
Removing and Replacing Field Replaceable Units
3.17 Replacing the CPU Module
9. Install the DHW42 logic board, and connect the DHW42 input/output cable
if fitted. Follow the steps in Section 3.15.1 and Section 3.15.2 in reverse
order to install the logic board and cable.
10. Install the upper and lower drive-mounting shelf combination. Follow the
steps in Section 3.11 in reverse order to install the drive-mounting shelf
combination.
11. Install the enclosure cover. Follow the steps in Section 3.1 in reverse order
to install the cover.
3.18 Removing the Power Supply
Note
In MicroVAX 3100 systems, the power supply (30-35042-01) is a single
FRU. It does not have any replaceable components.
To remove the power supply from the BA42B Enclosure, follow these steps:
1. Remove the ac power.
2. Remove the enclosure cover (refer to Section 3.1).
3. Remove the upper and lower drive-mounting shelf combination (refer to
Section 3.11).
4. Disconnect the power cable from the CPU module (refer to Figure 3–50).
5. Loosen the two captive screws (refer to Figure 3–52).
3–80 Removing and Replacing Field Replaceable Units
Removing and Replacing Field Replaceable Units
3.18 Removing the Power Supply
Figure 3–52 Removing the Power Supply
Power Supply Unit
Captive Screws (2)
Phillips Screws (2)
MLO-009940
6. Loosen the two Phillips screws (90-09984-07) that secure the power supply
to the left side of the enclosure (refer to Figure 3–52).
Caution
Ensure that you do not damage any of the MS44 or MS44L memory
modules when you lift the power supply out of the enclosure.
7. Lift the front of the power supply (refer to Figure 3–52).
8. Remove the power supply from the enclosure.
Removing and Replacing Field Replaceable Units 3–81
A
Pin Specifications for the Ports on the
BA42B System
Figure A–1, on the following page, shows the pin specifications for the ports on
the BA42B system.
Pin Specifications for the Ports on the BA42B System A–1
Pin Specifications for the Ports on the BA42B System
Figure A–1 Pin Specifications for the Ports on the BA42B System
100 V ac to 120 V ac
or
220 V ac to 240 V ac
at 50 Hz or 60 Hz
Power
Supply
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
1
2
3
4
1
2
3
4
-12 V dc (Blue)
Ground (Black)
Ground (Black)
Ground (Black)
+5.1 V dc (Red)
+5.1 V dc (Red)
+3.5 V dc to 5.25 V dc (Brown)
+5.1 V dc (Red)
+12.1 V dc (Orange)
+5.1 V dc (Red)
Ground (Black)
Ground (Black)
-9 V dc (Yellow)
-9 V dc Return (White)
+5 V dc (pullup)
Tx Data +
Tx Data Rx Data +
Rx Data 3 kohm to ground
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CPU
Module
+3.3 V dc
Ground Connection
+3.3 V dc Return
+12.1 V dc (Orange)
Ground (Black)
Ground (Black)
+5.1 V dc (Red)
+5 V dc (pullup)
Tx Data +
Tx Data Rx Data +
Rx Data 3 kohm to ground
Chassis Gnd (Opt)
TX
Rx
RTS
CTS
DSR
Signal Ground
CD
SPD
LLKB
DTR
RI
DSRS
TMI
+12.1 V dc (Orange)
Ground (Black)
Ground (Black)
+5.1 V dc (Red)
To and from
Internal
SCSI Devices
MMJ
Port 0
1
2
3
4
5
6
MMj
Port 1
1
2
3
4
5
6
MMJ
Port 3
1
2
3
4
5
6
7
8
12
18
20
22
23
25
Chassis Ground
1
Collision +
2
Transmit +
3
Receive +
5
+12 V dc Return
6
Collision 9
Transmit 10
Receive 12
+12 V dc, fuse protected
13
To and from
External
SCSI Devices
(See Table A-4)
To and from
DSSI Devices
(not used on
3100-Series)
NOTE: Asynchronous Option I/O
(See Table A-1 for 8-data or 16-data only option.
See Table A-2 for 8-modem control option)
+5 V dc (pullup)
Tx Data +
Tx Data Rx Data +
Rx Data 3 kohm to ground
1
2
3
4
5
6
Asynchronous
Communications
Option
Synchronous
Communications
Option
Asynchronous
Modem Control
Port 2
Standard
Ethernet
Port
ThinWire
Ethernet Port
(Coaxial)
Q-Bus
Synchronous Option I/O
(See Table A-3)
Asynchronous Option I/O
Synchronous Option I/O
MLO-009944a
A–2 Pin Specifications for the Ports on the BA42B System
Pin Specifications for the Ports on the BA42B System
Table A–1 Asynchronous Port A and Port B Pin Specifications for the EightData and 16-Data Line Options
Port A
Port B
2
1
Signal Name
2
Contact
Signal Name
1
LINE 0 TRANSMIT H
2
LINE 0 RECEIVE H
LINE 8 RECEIVE H
3
LINE 1 TRANSMIT H
LINE 9 TRANSMIT H
4
LINE 1 RECEIVE H
LINE 9 RECEIVE H
5
LINE 2 TRANSMIT H
LINE 10 TRANSMIT H
6
LINE 2 RECEIVE H
LINE 10 RECEIVE H
7
LINE 3 TRANSMIT H
LINE 11 TRANSMIT H
8
LINE 3 RECEIVE H
LINE 11 RECEIVE H
9
LINE 4 TRANSMIT H
LINE 12 TRANSMIT H
10
LINE 4 RECEIVE H
LINE 12 RECEIVE H
11
LINE 5 TRANSMIT H
LINE 13 TRANSMIT H
12
LINE 5 RECEIVE H
LINE 13 RECEIVE H
13
LINE 6 TRANSMIT H
LINE 14 TRANSMIT H
14
LINE 6 RECEIVE H
LINE 14 RECEIVE H
15
LINE 7 TRANSMIT H
LINE 15 TRANSMIT H
16
LINE 7 RECEIVE H
LINE 15 RECEIVE H
17
150 OHMS TO GROUND
150 OHMS TO GROUND
18
150 OHMS TO GROUND
150 OHMS TO GROUND
19
LINE 0 TRANSMIT L
LINE 8 TRANSMIT L
20
LINE 0 RECEIVE L
LINE 8 RECEIVE L
21
LINE 1 TRANSMIT L
LINE 9 TRANSMIT L
22
LINE 1 RECEIVE L
LINE 9 RECEIVE L
23
LINE 2 TRANSMIT L
LINE 10 TRANSMIT L
24
LINE 2 RECEIVE L
LINE 10 RECEIVE L
25
LINE 3 TRANSMIT L
LINE 11 TRANSMIT L
26
LINE 3 RECEIVE L
LINE 11 RECEIVE L
LINE 8 TRANSMIT H
1 Not
applicable to eight-data line option.
2 The
signal names ending with L are active low; the signal names ending with H are active high.
(continued on next page)
Pin Specifications for the Ports on the BA42B System A–3
Pin Specifications for the Ports on the BA42B System
Table A–1 (Cont.) Asynchronous Port A and Port B Pin Specifications for the
Eight-Data and 16-Data Line Options
Port A
Port B
2
1
Signal Name
2
Contact
Signal Name
27
LINE 4 TRANSMIT L
LINE 12 TRANSMIT L
28
LINE 4 RECEIVE L
LINE 12 RECEIVE L
29
LINE 5 TRANSMIT L
LINE 13 TRANSMIT L
30
LINE 5 RECEIVE L
LINE 13 RECEIVE L
31
LINE 6 TRANSMIT L
LINE 14 TRANSMIT L
32
LINE 6 RECEIVE L
LINE 14 RECEIVE L
33
LINE 7 TRANSMIT L
LINE 15 TRANSMIT L
34
LINE 7 RECEIVE L
LINE 15 RECEIVE L
35
150 OHMS TO GROUND
150 OHMS TO GROUND
36
150 OHMS TO GROUND
150 OHMS TO GROUND
1 Not
applicable to eight-data line option.
2 The
signal names ending with L are active low; the signal names ending with H are active high.
Table A–2 Asynchronous Port A and Port B Pin Specifications for the EightModem Control Line Option
Port A
Port B
1
1
Contact
Signal Name
1
LINE 0 TX CONN L
LINE 4 TX CONN L
2
LINE 0 RX CONN L
LINE 4 RX CONN L
3
LINE RTS CONN<0> H
LINE RTS CONN<4> H
4
LINE 0 CTS CONN H
LINE 4 CTS CONN H
5
LINE 0 DSR CONN H
LINE 4 DSR CONN H
6
LINE 0 SGND CONN L
LINE 4 SGND CONN L
7
LINE 0 CD CONN H
LINE 4 CD CONN H
8
LINE 0 SPDMI CONN H
LINE 4 SPDMI CONN H
9
LINE DTR CONN<0> H
LINE DTR CONN<4> H
1 The
Signal Name
signal names ending with L are active low; the signal names ending with H are active high.
(continued on next page)
A–4 Pin Specifications for the Ports on the BA42B System
Pin Specifications for the Ports on the BA42B System
Table A–2 (Cont.) Asynchronous Port A and Port B Pin Specifications for the
Eight-Modem Control Line Option
Port A
Port B
1
1
Contact
Signal Name
10
LINE 0 RI CONN H
LINE 4 RI CONN H
11
—
—
12
LINE DSRS CONN<0> H
LINE DSRS CONN<4> H
13
LINE 1 TX CONN L
LINE 5 TX CONN L
14
LINE 1 RX CONN L
LINE 5 RX CONN L
15
LINE RTS CONN<1> H
LINE RTS CONN<5> H
16
LINE 1 CTS CONN H
LINE 5 CTS CONN H
17
LINE 1 DSR CONN H
LINE 5 DSR CONN H
18
LINE 1 SGND CONN L
LINE 5 SGND CONN L
19
LINE 1 CD CONN H
LINE 5 CD CONN H
20
LINE 1 SPDMI CONN H
LINE 5 SPDMI CONN H
21
LINE DTR CONN<1> H
LINE DTR CONN<5> H
22
LINE 1 RI CONN H
LINE 5 RI CONN H
23
—
—
24
LINE DSRS CONN<1> H
LINE DSRS CONN<5> H
25
LINE 2 TX CONN L
LINE 6 TX CONN L
26
LINE 2 RX CONN L
LINE 6 RX CONN L
27
LINE RTS CONN<2> H
LINE RTS CONN<6> H
28
LINE 2 CTS CONN H
LINE 6 CTS CONN H
29
LINE 2 DSR CONN H
LINE 6 DSR CONN H
30
LINE 2 SGND CONN L
LINE 6 SGND CONN L
31
LINE 2 CD CONN H
LINE 6 CD CONN H
32
LINE 2 SPDMI CONN H
LINE 6 SPDMI CONN H
33
LINE DTR CONN<2> H
LINE DTR CONN<6> H
34
LINE 2 RI CONN H
LINE 6 RI CONN H
35
—
—
36
LINE DSRS CONN<2> H
LINE DSRS CONN<6> H
1 The
Signal Name
signal names ending with L are active low; the signal names ending with H are active high.
(continued on next page)
Pin Specifications for the Ports on the BA42B System A–5
Pin Specifications for the Ports on the BA42B System
Table A–2 (Cont.) Asynchronous Port A and Port B Pin Specifications for the
Eight-Modem Control Line Option
Port A
Port B
1
1
Contact
Signal Name
37
LINE 3 TX CONN L
LINE 7 TX CONN L
38
LINE 3 RX CONN L
LINE 7 RX CONN L
39
LINE RTS CONN<3> H
LINE RTS CONN <7> H
40
LINE 3 CTS CONN H
LINE 7 CTS CONN H
41
LINE 3 DSR CONN H
LINE 7 DSR CONN H
42
LINE 3 SGND CONN L
LINE 7 SGND CONN L
43
LINE 3 CD CONN H
LINE 7 CD CONN H
44
LINE 3 SPDMI CONN H
LINE 7 SPDMI CONN H
45
LINE DTR CONN<3> H
LINE DTR CONN<7> H
46
LINE 3 RI CONN H
LINE 7 RI CONN H
47
—
—
48
LINE DSRS CONN<3> H
LINE DSRS CONN<7> H
49
—
—
50
—
—
1 The
Signal Name
signal names ending with L are active low; the signal names ending with H are active high.
Table A–3 Pin Specifications for Synchronous Port 0 and Port 1
Port 0
Port 1
1
Signal Name
1
Contact
Signal Name
1
CODE GND 1 L
CODE GND 2 L
2
CODE0 1 L
CODE0 2 L
3
CODE1 1 L
CODE1 2 L
4
CODE2 1 L
CODE2 2 L
5
CODE3 1 L
CODE3 2 L
6
TXDATA(B) 1 P L
TXDATA(B) 2 P L
1 The
signal names ending with L are active low; the signal names ending with H are active high.
(continued on next page)
A–6 Pin Specifications for the Ports on the BA42B System
Pin Specifications for the Ports on the BA42B System
Table A–3 (Cont.) Pin Specifications for Synchronous Port 0 and Port 1
Port 0
Port 1
1
Signal Name
1
Contact
Signal Name
7
TXDATA(A) 1 P H
TXDATA(A) 2 P H
8
TXDATA 1 P L
TXDATA 2 P L
9
RTS/C A 1 P L
RTS/C A 2 P L
10
RTS/C B 1 P L
RTS/C B 2 P L
11
RX DATA A 1 P L
RX DATA A 2 P L
12
RX DATA B 1 P L
RX DATA B 2 P L
13
LOCAL LOOP 1 P H
LOCAL LOOP 2 P H
14
TEST 4 1 P L
TEST 4 2 P L
15
TEST 11 1 P H
TEST 11 2 P H
16
REM LOOP 1 P H
REM LOOP 2 P H
17
R1 1 P H
R1 2 P H
18
RXCLOCK A 1 P L
RXCLOCK A 2 P L
19
RXCLOCK B 1 P H
RXCLOCK B 2 P H
20
TXCLOCK A 1 P L
TXCLOCK A 2 P L
21
TXCLOCK B 1 P H
TXCLOCK B 2 P H
22
CLOCK 1 P L
CLOCK 2 P L
23
V35 TXCLK A 1 P L
V35 TXCLK A 2 P L
24
V35 TXCLK B 1 P H
V35 TXCLK B 2 P H
25
V35 CLK A 1 P L
V35 CLK A 2 P L
26
V35 CLK B 1 P H
V35 CLK B 2 P H
27
V35 RX A 1 P L
V35 RX A 2 P L
28
V35 RX B 1 P H
V35 RX B 2 P H
29
V35 TX A 1 P L
V35 TX A 2 P L
30
V35 TX B 1 P H
V35 TX B 2 P H
31
V35 RXCLK A 1 P L
V35 RXCLK A 2 P L
32
V35 RXCLK B 1 P H
V35 RXCLK B 2 P H
33
DTR 1 P H
DTR 2 P H
1 The
signal names ending with L are active low; the signal names ending with H are active high.
(continued on next page)
Pin Specifications for the Ports on the BA42B System A–7
Pin Specifications for the Ports on the BA42B System
Table A–3 (Cont.) Pin Specifications for Synchronous Port 0 and Port 1
Port 0
Port 1
1
Signal Name
1
Contact
Signal Name
34
DSR A 1 P H
DSR A 2 P H
35
DSR B 1 P L
DSR B 2 P L
36
RTS 1 P L
RTS 2 P L
37
DCD/I A 1 P H
DCD/I A 2 P H
38
DCD/I B 1 P L
DCD/I B 2 P L
39
CTS A 1 P H
CTS A 2 P H
40
CTS B 1 P L
CTS B 2 P L
42
TEST 1 1 P H
TEST 1 2 P H
43
TEST 2 1 P H
TEST 2 2 P H
44
DTE GND 1 PROT L
DTE GND 2 PROT L
45
DTR A 1 P H
DTR A 2 P H
46
DTR B 1 P L
DTR B 2 P L
47
CLOCK A 1 P L
CLOCK A 2 P L
48
CLOCK B 1 P H
CLOCK B 2 P H
49
TEST 3 1 P H
TEST 3 2 P H
50
SPEED SEL 1 P H
SPEED SEL 2 P H
1 The
signal names ending with L are active low; the signal names ending with H are active high.
A–8 Pin Specifications for the Ports on the BA42B System
Pin Specifications for the Ports on the BA42B System
Table A–4 Pin Specifications for the External SCSI Connector
Contact
Signal Name
1
1
Contact
Signal Name
GROUND
26
TERMPWR
2
DB (0) L
27
RESERVED
3
GROUND
28
RESERVED
4
DB (1) L
29
GROUND
5
GROUND
30
GROUND
6
DB (2) L
31
GROUND
7
GROUND
32
ATN L
8
DB (3) L
33
GROUND
9
GROUND
34
GROUND
10
DB (4) L
35
GROUND
11
GROUND
36
BSY L
12
DB (5) L
37
GROUND
13
GROUND
38
ACK L
14
DB (6) L
39
GROUND
15
GROUND
40
RST L
16
DB (7) L
41
GROUND
17
GROUND
42
MSG L
18
DB (P) L
43
GROUND
19
GROUND
44
SEL L
20
GROUND
45
GROUND
21
GROUND
46
C/D L
22
GROUND
47
GROUND
23
RESERVED
48
REQ L
24
RESERVED
49
GROUND
25
OPEN
50
I/O L
1 The
1
signal names ending with L are active low; the signal names ending with H are active high.
Pin Specifications for the Ports on the BA42B System A–9
B
Related Documentation
The following documents contain information relating to the MicroVAX 3100
Model 85/90/95/96 systems.
Document Title
Order Number
MicroVAX 3100 Model 85/90/95/96 KA50/51/55/56 CPU
System Maintenance
EK–M3100–SM
MicroVAX 3100 BA42B Enclosure System Options
EK–M3100–OP
Guide to MicroVAX 3100 Systems Service Information Kit
EK–M3100–IN
OpenVMS Factory Installed Software User Guide
EK–A0377–UG
Related Documentation B–1
C
Recommended Spare Parts List
Table C–1 gives a list of the recommended spare parts for the MicroVAX 3100
Model 85/90/95/96 systems that use the BA42B Enclosure.
Table C–1 Recommended Spare Parts
Description1
Part Number
Quantity
CPU module, KA50-AA/KA51-AA/KA55-AA
54–21797–01/02/04
1
SCSI cable clamp
90–11237–01
1
Cable assembly, SCSI A/B, CPU to I/O
17–02944–01
1
Terminator, 50-way SCSI (H8574-A)
12–30552–01
1
Loopback connector, standard Ethernet
12–22196–01
1
T-connector, ThinWire Ethernet (H8223)
12–25869–01
1
Terminator, ThinWire Ethernet, 50-ohm (H8225)
12–26318–01
2
Loopback connector, modem port, 25-way
29–24795–00
1
H8575-A
1
Memory module, MS44L-DC (4M bytes)
Adapter, 25-way EIA-232 to 6-way MMJ
MS44L-AA
1
Memory module, MS44 (16M bytes)
MS44-CA
1
Power supply unit (H7829-AA)
30–35042–01
1
17–03018–01
1
System power cord (USA)
Cable assembly, dc harness, lower shelf
17–00606–02
1
Terminal cable (BC16E-25)
17–00811–03
1
Antistatic kit
29–26246–00
1
SCSI cable
17–02943–01
1
1 The
major FRUs are the entries in this column that are not indented. This manual gives
instructions on how to replace these FRUs.
Recommended Spare Parts List C–1
Glossary
ac
Alternating current.
CDROM
Compact disc read-only memory.
CPU
Central processing unit. The main unit of a computer containing the circuits
that control the interpretation and execution of instructions. The CPU holds
the main storage, arithmetic unit, and special registers.
dc
Direct current.
ESD
Electrostatic discharge.
Ethernet
A type of local area network (LAN) based on carrier sense multiple access with
collision detection (CSMA/DC).
FDI
Floppy diskette interface.
FRU
Field replaceable unit.
ground
A voltage reference in a system that has a zero voltage potential.
Glossary–1
jumper wire
A short length of wire used to complete a circuit temporarily or to bypass a
circuit.
LED
Light emitting diode.
MMJ
Modified modular jack.
module
A unit that contains electrical components and electrically conductive pathways
between components.
port
A physical connector.
rms
Root mean square. The root mean square value of an alternating voltage is
the square root of the mean value of the square of the voltage values during a
complete cycle.
ROM
Read-only memory.
SCSI
Small computer system interface. An interface designed for connecting disks
and other peripheral devices to computer systems. SCSI is defined by an
American National Standards Institute (ANSI) standard.
standard Ethernet
An IEEE 802.3 compliant Ethernet network composed of standard Ethernet
cable as opposed to thin Ethernet cable.
system
A combination of system hardware, software, and peripheral devices that
performs specific processing operations.
ThinWire
A trademark used to describe Digital’s IEEE 802.3 compliant products used for
local distribution of data communication.
Glossary–2
Index
A
Accessory tray, 2–5
Air exhaust, 1–8
Air flow
typical value, 1–8
Air intake, 1–8
Altitude
nonoperating, 2–4
operating, 2–4
Asynchronous communications options
list of, 1–12
removing, 3–71
spare parts for, C–1
B
BA42B system
installing, 2–6
pin specifications, A–1
Break/enable LED
function of, 1–4
location of, 1–2
Break/enable switch
function of, 1–4
location of, 1–2
C
Cable loopback connectors, C–1
Cables
disconnecting from the CPU, 3–77
Communications devices
list, 1–12
Communications options
list of, 1–12
ports for, 1–2, 1–4
Configuration, 1–9 to 1–11
communications options, 1–12
mass storage devices, 1–14
system, 1–9
Connectors
system unit, 1–2, 1–4
Console terminal
communication parameters, 2–7
connecting, 2–7
Controls
system unit, 1–2, 1–4
Cover
removing, 3–5
CPU module
removing, 3–75
replacing, 3–79
D
DHW42
removing, 3–71
DHW42 input/output cable
removing, 3–72
DHW42 input/output module
removing, 3–73
DHW42 logic board
removing, 3–71
Dimensions
BA42B Enclosure, 2–1
shipping container, 2–2
Index–1
Disk drive
removing, 3–32
SCSI ID setting, 3–40
See RZ-series, 3–32, 3–40
Diskette drive
removing, 3–13
Documentation, B–1
Drive-mounting shelves
function of, 1–14
removing, 3–58
separating, 3–60
DSW41
removing, 3–67
DSW42 input/output cable
removing, 3–68
DSW42 input/output module
removing, 3–69
DSW42 logic board
removing, 3–67
E
Electrical power
requirements, 2–4
Electrostatic discharge
See ESD, 2–3
Enclosure
description of, 1–1
removing cover, 3–5
ESD
effects of, 2–3
protection, 2–3
Ethernet loopback connector
standard Ethernet, 2–12
Ethernet switch
function of, 1–4
location of, 1–2
Ethernet terminators
Model 85
connecting, 2–10
F
FDI/SCSI board
removing, 3–14
Field replaceable unit
See FRU
Flying lead connector, 3–20
FRU
defined, 3–1
list, 3–3
locations, 3–3
section references, 3–3
H
Heat dissipation
typical value, 2–3
Humidity
nonoperating, 2–4
operating, 2–4
storage, 2–4
I
Indicators
function of, 1–4
power OK, 1–2
system unit, 1–2, 1–4
Input/output module
DHW42, removing, 3–73
DSW42, removing, 3–69
Installation
Model 85, 2–7 to 2–15
Model 90, 2–7 to 2–15
Model 95, 2–7 to 2–15
Model 96, 2–7 to 2–15
Interconnection diagram, A–1
J
Jumper wires
RRD42 CDROM, 3–51
RRD43 CDROM, 3–57
RZ23L, 3–40
Index–2
Jumper wires (cont’d)
RZ24, 3–41
RZ24L, 3–42
RZ25, 3–43
RZ25L, 3–44
RZ25M, 3–45
RZ26, 3–46
RZ26L, 3–46
RZ28, 3–46
TZK10/TZK11, 3–26
K
KA50/51/55 CPU module
removing, 3–75
KZDDA SCSI Daughter Board
removing, 3–63
KZDDA SCSI Daughter Board Cable
removing, 3–63
L
LED display, 1–5
Logic board
DHW42, removing, 3–71
DSW42, removing, 3–67
Loopback connectors
for system ports, C–1
standard Ethernet, 2–12
M
Mass storage devices
combinations, 1–14
list, 1–14
orientation, 1–14
Memory, 1–9
expansion increments, 1–9
modules, 1–9, 3–6
Memory expansion connectors
identification of, 1–9
Mounting bracket
RRD42 CDROM, 3–49
RRD43 CDROM, 3–55
RX26/RX23, 3–15
RZ24L, 3–38
Mounting bracket (cont’d)
RZ25, 3–38
RZ25L, 3–38
RZ25M, 3–38
RZ26, 3–38
RZ26L, 3–38
RZ28, 3–38
TLZ06/TLZ07, 3–30
TZ30, 3–21
TZK10/TZK11, 3–25
MS44-BC memory module
removing, 3–6
MS44L-DC memory module
removing, 3–6
N
Nonoperating conditions, 2–4
O
On/Off switch
function of, 1–4
location of, 1–2
Operating conditions, 2–4
Option switches
TLZ06/TLZ07, 3–31
P
Pin specifications, A–1
Ports
asynchronous, 1–2, 1–4
function of, 1–2, 1–4
identifying, 1–2, 1–4
location of, 1–2
MMJ, 1–2, 1–4
SCSI, 1–2, 1–4
synchronous, 1–2, 1–4
Power cord
connecting, 2–13
Power distribution, 1–6 to 1–7
Power OK indicator, 1–2
Power-on indicator, 1–2
Index–3
Power requirements, 2–4
Power supply
dc current outputs, 1–6
removing, 3–80
Power supply unit
flying lead connector, 3–20
output power, 1–6
specifications, 1–6
R
Recommended spare parts
list of, C–1
Related documentation, B–1
RRD42 CDROM drive
mounting bracket, 3–49
removing, 3–47
SCSI ID setting, 3–51
RRD43 CDROM drive
mounting bracket, 3–55
removing, 3–53
SCSI ID setting, 3–57
RX26 FDI/SCSI board
removing, 3–14
RX26/RX23 diskette drive
mounting bracket, 3–15
removing, 3–13
RX26/RX23 FDI/SCSI board
SCSI ID setting, 3–16
RZ23L disk drive
remoing, 3–32
removing
from lower shelf, 3–34
from upper shelf, 3–32
SCSI ID setting, 3–40
RZ24 disk drive
removing, 3–32
from lower shelf, 3–34
from upper shelf, 3–32
SCSI ID setting, 3–40
RZ24L disk drive
removing, 3–32
from lower shelf, 3–34
from upper shelf, 3–32
SCSI ID setting, 3–40
Index–4
RZ25 disk drive
removing, 3–32
from lower shelf, 3–34
from upper shelf, 3–32
SCSI ID setting, 3–40
RZ25L disk drive
removing, 3–32
from lower shelf, 3–34
from upper shelf, 3–32
SCSI ID setting, 3–40
RZ25M disk drive
removing, 3–32
SCSI ID setting, 3–40
RZ26 disk drive
removing, 3–32
from lower shelf, 3–34
from upper shelf, 3–32
SCSI ID setting, 3–40
RZ26L disk drive
removing, 3–32
from lower shelf, 3–34
from upper shelf, 3–32
SCSI ID setting, 3–40
RZ28 disk drive
removing, 3–32
from lower shelf, 3–34
from upper shelf, 3–32
SCSI ID setting, 3–40
RZ-series disk drive
removing, 3–32
from lower shelf, 3–34
from upper shelf, 3–32
SCSI ID setting, 3–40
S
SCSI cable
removing, 3–62
SCSI Daughter Board
removing, 3–63
SCSI Daughter Board Cable
removing, 3–63
SCSI ID
RRD42 CDROM jumper wire locations,
3–51
SCSI ID (cont’d)
RRD43 CDROM jumper wire locations,
3–55
RX26/RX23 switch locations, 3–16, 3–17
RZ23L jumper wire locations, 3–40
RZ24 jumper wire locations, 3–41
RZ24L jumper wire locations, 3–42
RZ25 jumper wire locations, 3–43
RZ25L jumper wire locations, 3–44
RZ25M jumper wire locations, 3–45
RZ268 jumper wire locations, 3–46
RZ26 jumper wire locations, 3–46
RZ26L jumper wire locations, 3–46
TLZ06/TLZ07 SCSI ID and option
switches location, 3–31
TZ30 switch locations, 3–22
TZK10/TZK11 jumper wire locations,
3–26
SCSI ID switches
TLZ06/TLZ07, 3–31
Signal distribution, 1–7 to 1–8
Site preparation, 2–1
Space requirements, 2–6
Spare parts
list of, C–1
Standard Ethernet
loopback connector, 2–12
Static electricity
See ESD, 2–3
Storage conditions, 2–4
Support plate
separating, 3–36
Synchronous communications options
list of, 1–12
removing, 3–67
spare parts for, C–1
System configuration
guidelines for, 1–9
System loopback connectors, C–1
System unit
air exhaust, 1–8
air intake, 1–8
clearance, 2–6
connectors, 1–2
controls, 1–2
System unit (cont’d)
dimensions, 2–1
indicators, 1–2
Model 85/90/95/96
connectors, 2–7
ports, 2–7
ports, 1–2
spare parts for, C–1
turning on, 2–14
T
Tape drive
TLZ06/TLZ07, removing, 3–28
TZ30, removing, 3–19
TZK10/TZK11, removing, 3–23
Temperature
nonoperating, 2–4
operating, 2–4
storage, 2–4
Terminator
ThinWire Ethernet, 2–10
TLZ06/TLZ07 tape drive
mounting bracket, 3–30
option switches, 3–31
removing, 3–28
SCSI ID setting, 3–31
TZ30 tape drive
mounting bracket, 3–21
removing, 3–19
SCSI ID setting, 3–22
TZK10/TZK11 tape drive
mounting bracket, 3–25
removing, 3–23
SCSI ID setting, 3–26
U
Upper drive-mounting shelf
removing, 3–9
Index–5
Reader’s Comments
MicroVAX 3100 Model 85/90/95/96
BA42B Enclosure Maintenance
EK–M3100–MG. B01
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